20818980

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1$

素因数の和:107

約数の個数: 288

約数和(自身を含む): 82188288

約数和(自身を除く): 61369308

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 13, 14, 15, 18, 20, 21, 26, 28, 30, 31, 35, 36, 39, 41, 42, 45, 52, 60, 62, 63, 65, 70, 78, 82, 84, 90, 91, 93, 105, 117, 123, 124, 126, 130, 140, 155, 156, 164, 180, 182, 186, 195, 205, 210, 217, 234, 246, 252, 260, 273, 279, 287, 310, 315, 364, 369, 372, 390, 403, 410, 420, 434, 455, 465, 468, 492, 533, 546, 558, 574, 585, 615, 620, 630, 651, 738, 780, 806, 819, 820, 861, 868, 910, 930, 1066, 1085, 1092, 1116, 1148, 1170, 1209, 1230, 1260, 1271, 1302, 1365, 1395, 1435, 1476, 1599, 1612, 1638, 1722, 1820, 1845, 1860, 1953, 2015, 2132, 2170, 2340, 2418, 2460, 2542, 2583, 2604, 2665, 2730, 2790, 2821, 2870, 3198, 3255, 3276, 3444, 3627, 3690, 3731, 3813, 3906, 4030, 4095, 4305, 4340, 4797, 4836, 5084, 5166, 5330, 5460, 5580, 5642, 5740, 6045, 6355, 6396, 6510, 7254, 7380, 7462, 7626, 7812, 7995, 8060, 8190, 8463, 8610, 8897, 9594, 9765, 10332, 10660, 11193, 11284, 11439, 12090, 12710, 12915, 13020, 14105, 14508, 14924, 15252, 15990, 16380, 16523, 16926, 17220, 17794, 18135, 18655, 19065, 19188, 19530, 22386, 22878, 23985, 24180, 25389, 25420, 25830, 26691, 28210, 31980, 33046, 33579, 33852, 35588, 36270, 37310, 38130, 39060, 42315, 44485, 44772, 45756, 47970, 49569, 50778, 51660, 53382, 55965, 56420, 57195, 66092, 67158, 72540, 74620, 76260, 80073, 82615, 84630, 88970, 95940, 99138, 101556, 106764, 111930, 114390, 115661, 126945, 133455, 134316, 148707, 160146, 165230, 167895, 169260, 177940, 198276, 223860, 228780, 231322, 247845, 253890, 266910, 297414, 320292, 330460, 335790, 346983, 400365, 462644, 495690, 507780, 533820, 578305, 594828, 671580, 693966, 743535, 800730, 991380, 1040949, 1156610, 1387932, 1487070, 1601460, 1734915, 2081898, 2313220, 2974140, 3469830, 4163796, 5204745, 6939660, 10409490, 20818980]

約数ペア:

[(1, 20818980), (2, 10409490), (3, 6939660), (4, 5204745), (5, 4163796), (6, 3469830), (7, 2974140), (9, 2313220), (10, 2081898), (12, 1734915), (13, 1601460), (14, 1487070), (15, 1387932), (18, 1156610), (20, 1040949), (21, 991380), (26, 800730), (28, 743535), (30, 693966), (31, 671580), (35, 594828), (36, 578305), (39, 533820), (41, 507780), (42, 495690), (45, 462644), (52, 400365), (60, 346983), (62, 335790), (63, 330460), (65, 320292), (70, 297414), (78, 266910), (82, 253890), (84, 247845), (90, 231322), (91, 228780), (93, 223860), (105, 198276), (117, 177940), (123, 169260), (124, 167895), (126, 165230), (130, 160146), (140, 148707), (155, 134316), (156, 133455), (164, 126945), (180, 115661), (182, 114390), (186, 111930), (195, 106764), (205, 101556), (210, 99138), (217, 95940), (234, 88970), (246, 84630), (252, 82615), (260, 80073), (273, 76260), (279, 74620), (287, 72540), (310, 67158), (315, 66092), (364, 57195), (369, 56420), (372, 55965), (390, 53382), (403, 51660), (410, 50778), (420, 49569), (434, 47970), (455, 45756), (465, 44772), (468, 44485), (492, 42315), (533, 39060), (546, 38130), (558, 37310), (574, 36270), (585, 35588), (615, 33852), (620, 33579), (630, 33046), (651, 31980), (738, 28210), (780, 26691), (806, 25830), (819, 25420), (820, 25389), (861, 24180), (868, 23985), (910, 22878), (930, 22386), (1066, 19530), (1085, 19188), (1092, 19065), (1116, 18655), (1148, 18135), (1170, 17794), (1209, 17220), (1230, 16926), (1260, 16523), (1271, 16380), (1302, 15990), (1365, 15252), (1395, 14924), (1435, 14508), (1476, 14105), (1599, 13020), (1612, 12915), (1638, 12710), (1722, 12090), (1820, 11439), (1845, 11284), (1860, 11193), (1953, 10660), (2015, 10332), (2132, 9765), (2170, 9594), (2340, 8897), (2418, 8610), (2460, 8463), (2542, 8190), (2583, 8060), (2604, 7995), (2665, 7812), (2730, 7626), (2790, 7462), (2821, 7380), (2870, 7254), (3198, 6510), (3255, 6396), (3276, 6355), (3444, 6045), (3627, 5740), (3690, 5642), (3731, 5580), (3813, 5460), (3906, 5330), (4030, 5166), (4095, 5084), (4305, 4836), (4340, 4797)]