21212100

素因数分解:

$2^2\times 3^2\times 5^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1$

素因数の和:84

約数の個数: 324

約数和(自身を含む): 85544004

約数和(自身を除く): 64331904

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 13, 14, 15, 18, 20, 21, 25, 26, 28, 30, 35, 36, 37, 39, 42, 45, 49, 50, 52, 60, 63, 65, 70, 74, 75, 78, 84, 90, 91, 98, 100, 105, 111, 117, 126, 130, 140, 147, 148, 150, 156, 175, 180, 182, 185, 195, 196, 210, 222, 225, 234, 245, 252, 259, 260, 273, 294, 300, 315, 325, 333, 350, 364, 370, 390, 420, 441, 444, 450, 455, 468, 481, 490, 518, 525, 546, 555, 585, 588, 630, 637, 650, 666, 700, 735, 740, 777, 780, 819, 882, 900, 910, 925, 962, 975, 980, 1036, 1050, 1092, 1110, 1170, 1225, 1260, 1274, 1295, 1300, 1332, 1365, 1443, 1470, 1554, 1575, 1638, 1665, 1764, 1813, 1820, 1850, 1911, 1924, 1950, 2100, 2205, 2220, 2275, 2331, 2340, 2405, 2450, 2548, 2590, 2730, 2775, 2886, 2925, 2940, 3108, 3150, 3185, 3276, 3330, 3367, 3626, 3675, 3700, 3822, 3885, 3900, 4095, 4329, 4410, 4550, 4662, 4810, 4900, 5180, 5439, 5460, 5550, 5733, 5772, 5850, 6300, 6370, 6475, 6660, 6734, 6825, 7215, 7252, 7350, 7644, 7770, 8190, 8325, 8658, 8820, 9065, 9100, 9324, 9555, 9620, 10101, 10878, 11025, 11100, 11466, 11655, 11700, 12025, 12740, 12950, 13468, 13650, 14430, 14700, 15540, 15925, 16317, 16380, 16650, 16835, 17316, 18130, 19110, 19425, 20202, 20475, 21645, 21756, 22050, 22932, 23310, 23569, 24050, 25900, 27195, 27300, 28665, 28860, 30303, 31850, 32634, 33300, 33670, 36075, 36260, 38220, 38850, 40404, 40950, 43290, 44100, 45325, 46620, 47138, 47775, 48100, 50505, 54390, 57330, 58275, 60606, 63700, 65268, 67340, 70707, 72150, 77700, 81585, 81900, 84175, 86580, 90650, 94276, 95550, 101010, 108225, 108780, 114660, 116550, 117845, 121212, 135975, 141414, 143325, 144300, 151515, 163170, 168350, 181300, 191100, 202020, 212121, 216450, 233100, 235690, 252525, 271950, 282828, 286650, 303030, 326340, 336700, 353535, 407925, 424242, 432900, 471380, 505050, 543900, 573300, 589225, 606060, 707070, 757575, 815850, 848484, 1010100, 1060605, 1178450, 1414140, 1515150, 1631700, 1767675, 2121210, 2356900, 3030300, 3535350, 4242420, 5303025, 7070700, 10606050, 21212100]

約数ペア:

[(1, 21212100), (2, 10606050), (3, 7070700), (4, 5303025), (5, 4242420), (6, 3535350), (7, 3030300), (9, 2356900), (10, 2121210), (12, 1767675), (13, 1631700), (14, 1515150), (15, 1414140), (18, 1178450), (20, 1060605), (21, 1010100), (25, 848484), (26, 815850), (28, 757575), (30, 707070), (35, 606060), (36, 589225), (37, 573300), (39, 543900), (42, 505050), (45, 471380), (49, 432900), (50, 424242), (52, 407925), (60, 353535), (63, 336700), (65, 326340), (70, 303030), (74, 286650), (75, 282828), (78, 271950), (84, 252525), (90, 235690), (91, 233100), (98, 216450), (100, 212121), (105, 202020), (111, 191100), (117, 181300), (126, 168350), (130, 163170), (140, 151515), (147, 144300), (148, 143325), (150, 141414), (156, 135975), (175, 121212), (180, 117845), (182, 116550), (185, 114660), (195, 108780), (196, 108225), (210, 101010), (222, 95550), (225, 94276), (234, 90650), (245, 86580), (252, 84175), (259, 81900), (260, 81585), (273, 77700), (294, 72150), (300, 70707), (315, 67340), (325, 65268), (333, 63700), (350, 60606), (364, 58275), (370, 57330), (390, 54390), (420, 50505), (441, 48100), (444, 47775), (450, 47138), (455, 46620), (468, 45325), (481, 44100), (490, 43290), (518, 40950), (525, 40404), (546, 38850), (555, 38220), (585, 36260), (588, 36075), (630, 33670), (637, 33300), (650, 32634), (666, 31850), (700, 30303), (735, 28860), (740, 28665), (777, 27300), (780, 27195), (819, 25900), (882, 24050), (900, 23569), (910, 23310), (925, 22932), (962, 22050), (975, 21756), (980, 21645), (1036, 20475), (1050, 20202), (1092, 19425), (1110, 19110), (1170, 18130), (1225, 17316), (1260, 16835), (1274, 16650), (1295, 16380), (1300, 16317), (1332, 15925), (1365, 15540), (1443, 14700), (1470, 14430), (1554, 13650), (1575, 13468), (1638, 12950), (1665, 12740), (1764, 12025), (1813, 11700), (1820, 11655), (1850, 11466), (1911, 11100), (1924, 11025), (1950, 10878), (2100, 10101), (2205, 9620), (2220, 9555), (2275, 9324), (2331, 9100), (2340, 9065), (2405, 8820), (2450, 8658), (2548, 8325), (2590, 8190), (2730, 7770), (2775, 7644), (2886, 7350), (2925, 7252), (2940, 7215), (3108, 6825), (3150, 6734), (3185, 6660), (3276, 6475), (3330, 6370), (3367, 6300), (3626, 5850), (3675, 5772), (3700, 5733), (3822, 5550), (3885, 5460), (3900, 5439), (4095, 5180), (4329, 4900), (4410, 4810), (4550, 4662)]