18989880

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1$

素因数の和:118

約数の個数: 256

約数和(自身を含む): 73543680

約数和(自身を除く): 54553800

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 20, 21, 24, 26, 28, 30, 35, 37, 39, 40, 42, 47, 52, 56, 60, 65, 70, 74, 78, 84, 91, 94, 104, 105, 111, 120, 130, 140, 141, 148, 156, 168, 182, 185, 188, 195, 210, 222, 235, 259, 260, 273, 280, 282, 296, 312, 329, 364, 370, 376, 390, 420, 444, 455, 470, 481, 518, 520, 546, 555, 564, 611, 658, 705, 728, 740, 777, 780, 840, 888, 910, 940, 962, 987, 1036, 1092, 1110, 1128, 1222, 1295, 1316, 1365, 1410, 1443, 1480, 1554, 1560, 1645, 1739, 1820, 1833, 1880, 1924, 1974, 2072, 2184, 2220, 2405, 2444, 2590, 2632, 2730, 2820, 2886, 3055, 3108, 3290, 3367, 3478, 3640, 3666, 3848, 3885, 3948, 4277, 4440, 4810, 4888, 4935, 5180, 5217, 5460, 5640, 5772, 6110, 6216, 6580, 6734, 6956, 7215, 7332, 7770, 7896, 8554, 8695, 9165, 9620, 9870, 10101, 10360, 10434, 10920, 11544, 12173, 12220, 12831, 13160, 13468, 13912, 14430, 14664, 15540, 16835, 17108, 17390, 18330, 19240, 19740, 20202, 20868, 21385, 22607, 24346, 24440, 25662, 26085, 26936, 28860, 31080, 33670, 34216, 34780, 36519, 36660, 39480, 40404, 41736, 42770, 45214, 48692, 50505, 51324, 52170, 57720, 60865, 64155, 67340, 67821, 69560, 73038, 73320, 80808, 85540, 90428, 97384, 101010, 102648, 104340, 113035, 121730, 128310, 134680, 135642, 146076, 158249, 171080, 180856, 182595, 202020, 208680, 226070, 243460, 256620, 271284, 292152, 316498, 339105, 365190, 404040, 452140, 474747, 486920, 513240, 542568, 632996, 678210, 730380, 791245, 904280, 949494, 1265992, 1356420, 1460760, 1582490, 1898988, 2373735, 2712840, 3164980, 3797976, 4747470, 6329960, 9494940, 18989880]

約数ペア:

[(1, 18989880), (2, 9494940), (3, 6329960), (4, 4747470), (5, 3797976), (6, 3164980), (7, 2712840), (8, 2373735), (10, 1898988), (12, 1582490), (13, 1460760), (14, 1356420), (15, 1265992), (20, 949494), (21, 904280), (24, 791245), (26, 730380), (28, 678210), (30, 632996), (35, 542568), (37, 513240), (39, 486920), (40, 474747), (42, 452140), (47, 404040), (52, 365190), (56, 339105), (60, 316498), (65, 292152), (70, 271284), (74, 256620), (78, 243460), (84, 226070), (91, 208680), (94, 202020), (104, 182595), (105, 180856), (111, 171080), (120, 158249), (130, 146076), (140, 135642), (141, 134680), (148, 128310), (156, 121730), (168, 113035), (182, 104340), (185, 102648), (188, 101010), (195, 97384), (210, 90428), (222, 85540), (235, 80808), (259, 73320), (260, 73038), (273, 69560), (280, 67821), (282, 67340), (296, 64155), (312, 60865), (329, 57720), (364, 52170), (370, 51324), (376, 50505), (390, 48692), (420, 45214), (444, 42770), (455, 41736), (470, 40404), (481, 39480), (518, 36660), (520, 36519), (546, 34780), (555, 34216), (564, 33670), (611, 31080), (658, 28860), (705, 26936), (728, 26085), (740, 25662), (777, 24440), (780, 24346), (840, 22607), (888, 21385), (910, 20868), (940, 20202), (962, 19740), (987, 19240), (1036, 18330), (1092, 17390), (1110, 17108), (1128, 16835), (1222, 15540), (1295, 14664), (1316, 14430), (1365, 13912), (1410, 13468), (1443, 13160), (1480, 12831), (1554, 12220), (1560, 12173), (1645, 11544), (1739, 10920), (1820, 10434), (1833, 10360), (1880, 10101), (1924, 9870), (1974, 9620), (2072, 9165), (2184, 8695), (2220, 8554), (2405, 7896), (2444, 7770), (2590, 7332), (2632, 7215), (2730, 6956), (2820, 6734), (2886, 6580), (3055, 6216), (3108, 6110), (3290, 5772), (3367, 5640), (3478, 5460), (3640, 5217), (3666, 5180), (3848, 4935), (3885, 4888), (3948, 4810), (4277, 4440)]