639518032

素因数分解:

$2^4\times {\mathrm{617}}^1\times {\mathrm{64781}}^1$

素因数の和:65406

約数の個数: 20

約数和(自身を含む): 1241093556

約数和(自身を除く): 601575524

約数列:

[1, 2, 4, 8, 16, 617, 1234, 2468, 4936, 9872, 64781, 129562, 259124, 518248, 1036496, 39969877, 79939754, 159879508, 319759016, 639518032]

約数ペア:

[(1, 639518032), (2, 319759016), (4, 159879508), (8, 79939754), (16, 39969877), (617, 1036496), (1234, 518248), (2468, 259124), (4936, 129562), (9872, 64781)]