90144280

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{523}}^1$

素因数の和:704

約数の個数: 64

約数和(自身を含む): 211276800

約数和(自身を除く): 121132520

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 139, 155, 248, 278, 310, 523, 556, 620, 695, 1046, 1112, 1240, 1390, 2092, 2615, 2780, 4184, 4309, 5230, 5560, 8618, 10460, 16213, 17236, 20920, 21545, 32426, 34472, 43090, 64852, 72697, 81065, 86180, 129704, 145394, 162130, 172360, 290788, 324260, 363485, 581576, 648520, 726970, 1453940, 2253607, 2907880, 4507214, 9014428, 11268035, 18028856, 22536070, 45072140, 90144280]

約数ペア:

[(1, 90144280), (2, 45072140), (4, 22536070), (5, 18028856), (8, 11268035), (10, 9014428), (20, 4507214), (31, 2907880), (40, 2253607), (62, 1453940), (124, 726970), (139, 648520), (155, 581576), (248, 363485), (278, 324260), (310, 290788), (523, 172360), (556, 162130), (620, 145394), (695, 129704), (1046, 86180), (1112, 81065), (1240, 72697), (1390, 64852), (2092, 43090), (2615, 34472), (2780, 32426), (4184, 21545), (4309, 20920), (5230, 17236), (5560, 16213), (8618, 10460)]