640546988

素因数分解:

$2^2\times {\mathrm{277}}^1\times {\mathrm{313}}^1\times {\mathrm{1847}}^1$

素因数の和:2441

約数の個数: 24

約数和(自身を含む): 1129209312

約数和(自身を除く): 488662324

約数列:

[1, 2, 4, 277, 313, 554, 626, 1108, 1252, 1847, 3694, 7388, 86701, 173402, 346804, 511619, 578111, 1023238, 1156222, 2046476, 2312444, 160136747, 320273494, 640546988]

約数ペア:

[(1, 640546988), (2, 320273494), (4, 160136747), (277, 2312444), (313, 2046476), (554, 1156222), (626, 1023238), (1108, 578111), (1252, 511619), (1847, 346804), (3694, 173402), (7388, 86701)]