90807680

素因数分解:

$2^7\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{199}}^1$

素因数の和:272

約数の個数: 128

約数和(自身を含む): 235008000

約数和(自身を除く): 144200320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 31, 32, 40, 46, 62, 64, 80, 92, 115, 124, 128, 155, 160, 184, 199, 230, 248, 310, 320, 368, 398, 460, 496, 620, 640, 713, 736, 796, 920, 992, 995, 1240, 1426, 1472, 1592, 1840, 1984, 1990, 2480, 2852, 2944, 3184, 3565, 3680, 3968, 3980, 4577, 4960, 5704, 6169, 6368, 7130, 7360, 7960, 9154, 9920, 11408, 12338, 12736, 14260, 14720, 15920, 18308, 19840, 22816, 22885, 24676, 25472, 28520, 30845, 31840, 36616, 45632, 45770, 49352, 57040, 61690, 63680, 73232, 91264, 91540, 98704, 114080, 123380, 127360, 141887, 146464, 183080, 197408, 228160, 246760, 283774, 292928, 366160, 394816, 456320, 493520, 567548, 585856, 709435, 732320, 789632, 987040, 1135096, 1418870, 1464640, 1974080, 2270192, 2837740, 2929280, 3948160, 4540384, 5675480, 9080768, 11350960, 18161536, 22701920, 45403840, 90807680]

約数ペア:

[(1, 90807680), (2, 45403840), (4, 22701920), (5, 18161536), (8, 11350960), (10, 9080768), (16, 5675480), (20, 4540384), (23, 3948160), (31, 2929280), (32, 2837740), (40, 2270192), (46, 1974080), (62, 1464640), (64, 1418870), (80, 1135096), (92, 987040), (115, 789632), (124, 732320), (128, 709435), (155, 585856), (160, 567548), (184, 493520), (199, 456320), (230, 394816), (248, 366160), (310, 292928), (320, 283774), (368, 246760), (398, 228160), (460, 197408), (496, 183080), (620, 146464), (640, 141887), (713, 127360), (736, 123380), (796, 114080), (920, 98704), (992, 91540), (995, 91264), (1240, 73232), (1426, 63680), (1472, 61690), (1592, 57040), (1840, 49352), (1984, 45770), (1990, 45632), (2480, 36616), (2852, 31840), (2944, 30845), (3184, 28520), (3565, 25472), (3680, 24676), (3968, 22885), (3980, 22816), (4577, 19840), (4960, 18308), (5704, 15920), (6169, 14720), (6368, 14260), (7130, 12736), (7360, 12338), (7960, 11408), (9154, 9920)]