20572895

素因数分解:

$5^1\times 7^2\times {\mathrm{131}}^1\times {\mathrm{641}}^1$

素因数の和:791

約数の個数: 24

約数和(自身を含む): 28982448

約数和(自身を除く): 8409553

約数列:

[1, 5, 7, 35, 49, 131, 245, 641, 655, 917, 3205, 4487, 4585, 6419, 22435, 31409, 32095, 83971, 157045, 419855, 587797, 2938985, 4114579, 20572895]

約数ペア:

[(1, 20572895), (5, 4114579), (7, 2938985), (35, 587797), (49, 419855), (131, 157045), (245, 83971), (641, 32095), (655, 31409), (917, 22435), (3205, 6419), (4487, 4585)]