639965056

素因数分解:

$2^7\times {\mathrm{4999727}}^1$

素因数の和:4999741

約数の個数: 16

約数和(自身を含む): 1274930640

約数和(自身を除く): 634965584

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 4999727, 9999454, 19998908, 39997816, 79995632, 159991264, 319982528, 639965056]

約数ペア:

[(1, 639965056), (2, 319982528), (4, 159991264), (8, 79995632), (16, 39997816), (32, 19998908), (64, 9999454), (128, 4999727)]