257630416

素因数分解:

$2^4\times {\mathrm{251}}^1\times {\mathrm{64151}}^1$

素因数の和:64410

約数の個数: 20

約数和(自身を含む): 501155424

約数和(自身を除く): 243525008

約数列:

[1, 2, 4, 8, 16, 251, 502, 1004, 2008, 4016, 64151, 128302, 256604, 513208, 1026416, 16101901, 32203802, 64407604, 128815208, 257630416]

約数ペア:

[(1, 257630416), (2, 128815208), (4, 64407604), (8, 32203802), (16, 16101901), (251, 1026416), (502, 513208), (1004, 256604), (2008, 128302), (4016, 64151)]