401029780

素因数分解:

$2^2\times 5^1\times {\mathrm{1091}}^1\times {\mathrm{18379}}^1$

素因数の和:19479

約数の個数: 24

約数和(自身を含む): 842980320

約数和(自身を除く): 441950540

約数列:

[1, 2, 4, 5, 10, 20, 1091, 2182, 4364, 5455, 10910, 18379, 21820, 36758, 73516, 91895, 183790, 367580, 20051489, 40102978, 80205956, 100257445, 200514890, 401029780]

約数ペア:

[(1, 401029780), (2, 200514890), (4, 100257445), (5, 80205956), (10, 40102978), (20, 20051489), (1091, 367580), (2182, 183790), (4364, 91895), (5455, 73516), (10910, 36758), (18379, 21820)]