205491640

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{65029}}^1$

素因数の和:65119

約数の個数: 32

約数和(自身を含む): 468216000

約数和(自身を除く): 262724360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 3160, 65029, 130058, 260116, 325145, 520232, 650290, 1300580, 2601160, 5137291, 10274582, 20549164, 25686455, 41098328, 51372910, 102745820, 205491640]

約数ペア:

[(1, 205491640), (2, 102745820), (4, 51372910), (5, 41098328), (8, 25686455), (10, 20549164), (20, 10274582), (40, 5137291), (79, 2601160), (158, 1300580), (316, 650290), (395, 520232), (632, 325145), (790, 260116), (1580, 130058), (3160, 65029)]