656187568

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{373}}^1\times {\mathrm{2557}}^1$

素因数の和:2981

約数の個数: 40

約数和(自身を含む): 1304927888

約数和(自身を除く): 648740320

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 373, 688, 746, 1492, 2557, 2984, 5114, 5968, 10228, 16039, 20456, 32078, 40912, 64156, 109951, 128312, 219902, 256624, 439804, 879608, 953761, 1759216, 1907522, 3815044, 7630088, 15260176, 41011723, 82023446, 164046892, 328093784, 656187568]

約数ペア:

[(1, 656187568), (2, 328093784), (4, 164046892), (8, 82023446), (16, 41011723), (43, 15260176), (86, 7630088), (172, 3815044), (344, 1907522), (373, 1759216), (688, 953761), (746, 879608), (1492, 439804), (2557, 256624), (2984, 219902), (5114, 128312), (5968, 109951), (10228, 64156), (16039, 40912), (20456, 32078)]