639015896

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{227}}^1\times {\mathrm{11351}}^1$

素因数の和:11615

約数の個数: 32

約数和(自身を含む): 1242362880

約数和(自身を除く): 603346984

約数列:

[1, 2, 4, 8, 31, 62, 124, 227, 248, 454, 908, 1816, 7037, 11351, 14074, 22702, 28148, 45404, 56296, 90808, 351881, 703762, 1407524, 2576677, 2815048, 5153354, 10306708, 20613416, 79876987, 159753974, 319507948, 639015896]

約数ペア:

[(1, 639015896), (2, 319507948), (4, 159753974), (8, 79876987), (31, 20613416), (62, 10306708), (124, 5153354), (227, 2815048), (248, 2576677), (454, 1407524), (908, 703762), (1816, 351881), (7037, 90808), (11351, 56296), (14074, 45404), (22702, 28148)]