40320220

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{49171}}^1$

素因数の和:49221

約数の個数: 24

約数和(自身を含む): 86739408

約数和(自身を除く): 46419188

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 49171, 98342, 196684, 245855, 491710, 983420, 2016011, 4032022, 8064044, 10080055, 20160110, 40320220]

約数ペア:

[(1, 40320220), (2, 20160110), (4, 10080055), (5, 8064044), (10, 4032022), (20, 2016011), (41, 983420), (82, 491710), (164, 245855), (205, 196684), (410, 98342), (820, 49171)]