639275338

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{346303}}^1$

素因数の和:346389

約数の個数: 16

約数和(自身を含む): 1047223296

約数和(自身を除く): 407947958

約数列:

[1, 2, 13, 26, 71, 142, 923, 1846, 346303, 692606, 4501939, 9003878, 24587513, 49175026, 319637669, 639275338]

約数ペア:

[(1, 639275338), (2, 319637669), (13, 49175026), (26, 24587513), (71, 9003878), (142, 4501939), (923, 692606), (1846, 346303)]