81011560

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{53}}^2\times {\mathrm{103}}^1$

素因数の和:227

約数の個数: 96

約数和(自身を含む): 214381440

約数和(自身を除く): 133369880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 53, 56, 70, 103, 106, 140, 206, 212, 265, 280, 371, 412, 424, 515, 530, 721, 742, 824, 1030, 1060, 1442, 1484, 1855, 2060, 2120, 2809, 2884, 2968, 3605, 3710, 4120, 5459, 5618, 5768, 7210, 7420, 10918, 11236, 14045, 14420, 14840, 19663, 21836, 22472, 27295, 28090, 28840, 38213, 39326, 43672, 54590, 56180, 76426, 78652, 98315, 109180, 112360, 152852, 157304, 191065, 196630, 218360, 289327, 305704, 382130, 393260, 578654, 764260, 786520, 1157308, 1446635, 1528520, 2025289, 2314616, 2893270, 4050578, 5786540, 8101156, 10126445, 11573080, 16202312, 20252890, 40505780, 81011560]

約数ペア:

[(1, 81011560), (2, 40505780), (4, 20252890), (5, 16202312), (7, 11573080), (8, 10126445), (10, 8101156), (14, 5786540), (20, 4050578), (28, 2893270), (35, 2314616), (40, 2025289), (53, 1528520), (56, 1446635), (70, 1157308), (103, 786520), (106, 764260), (140, 578654), (206, 393260), (212, 382130), (265, 305704), (280, 289327), (371, 218360), (412, 196630), (424, 191065), (515, 157304), (530, 152852), (721, 112360), (742, 109180), (824, 98315), (1030, 78652), (1060, 76426), (1442, 56180), (1484, 54590), (1855, 43672), (2060, 39326), (2120, 38213), (2809, 28840), (2884, 28090), (2968, 27295), (3605, 22472), (3710, 21836), (4120, 19663), (5459, 14840), (5618, 14420), (5768, 14045), (7210, 11236), (7420, 10918)]