2121210

素因数分解:

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

素因数の和:77

約数の個数: 144

約数和(自身を含む): 7095816

約数和(自身を除く): 4974606

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 13, 14, 15, 18, 21, 26, 30, 35, 37, 39, 42, 45, 49, 63, 65, 70, 74, 78, 90, 91, 98, 105, 111, 117, 126, 130, 147, 182, 185, 195, 210, 222, 234, 245, 259, 273, 294, 315, 333, 370, 390, 441, 455, 481, 490, 518, 546, 555, 585, 630, 637, 666, 735, 777, 819, 882, 910, 962, 1110, 1170, 1274, 1295, 1365, 1443, 1470, 1554, 1638, 1665, 1813, 1911, 2205, 2331, 2405, 2590, 2730, 2886, 3185, 3330, 3367, 3626, 3822, 3885, 4095, 4329, 4410, 4662, 4810, 5439, 5733, 6370, 6734, 7215, 7770, 8190, 8658, 9065, 9555, 10101, 10878, 11466, 11655, 14430, 16317, 16835, 18130, 19110, 20202, 21645, 23310, 23569, 27195, 28665, 30303, 32634, 33670, 43290, 47138, 50505, 54390, 57330, 60606, 70707, 81585, 101010, 117845, 141414, 151515, 163170, 212121, 235690, 303030, 353535, 424242, 707070, 1060605, 2121210]

約数ペア:

[(1, 2121210), (2, 1060605), (3, 707070), (5, 424242), (6, 353535), (7, 303030), (9, 235690), (10, 212121), (13, 163170), (14, 151515), (15, 141414), (18, 117845), (21, 101010), (26, 81585), (30, 70707), (35, 60606), (37, 57330), (39, 54390), (42, 50505), (45, 47138), (49, 43290), (63, 33670), (65, 32634), (70, 30303), (74, 28665), (78, 27195), (90, 23569), (91, 23310), (98, 21645), (105, 20202), (111, 19110), (117, 18130), (126, 16835), (130, 16317), (147, 14430), (182, 11655), (185, 11466), (195, 10878), (210, 10101), (222, 9555), (234, 9065), (245, 8658), (259, 8190), (273, 7770), (294, 7215), (315, 6734), (333, 6370), (370, 5733), (390, 5439), (441, 4810), (455, 4662), (481, 4410), (490, 4329), (518, 4095), (546, 3885), (555, 3822), (585, 3626), (630, 3367), (637, 3330), (666, 3185), (735, 2886), (777, 2730), (819, 2590), (882, 2405), (910, 2331), (962, 2205), (1110, 1911), (1170, 1813), (1274, 1665), (1295, 1638), (1365, 1554), (1443, 1470)]