128519408

素因数分解:

$2^4\times {\mathrm{317}}^1\times {\mathrm{25339}}^1$

素因数の和:25664

約数の個数: 20

約数和(自身を含む): 249801720

約数和(自身を除く): 121282312

約数列:

[1, 2, 4, 8, 16, 317, 634, 1268, 2536, 5072, 25339, 50678, 101356, 202712, 405424, 8032463, 16064926, 32129852, 64259704, 128519408]

約数ペア:

[(1, 128519408), (2, 64259704), (4, 32129852), (8, 16064926), (16, 8032463), (317, 405424), (634, 202712), (1268, 101356), (2536, 50678), (5072, 25339)]