402022705

素因数分解:

$5^1\times 7^2\times {\mathrm{79}}^1\times {\mathrm{20771}}^1$

素因数の和:20869

約数の個数: 24

約数和(自身を含む): 568321920

約数和(自身を除く): 166299215

約数列:

[1, 5, 7, 35, 49, 79, 245, 395, 553, 2765, 3871, 19355, 20771, 103855, 145397, 726985, 1017779, 1640909, 5088895, 8204545, 11486363, 57431815, 80404541, 402022705]

約数ペア:

[(1, 402022705), (5, 80404541), (7, 57431815), (35, 11486363), (49, 8204545), (79, 5088895), (245, 1640909), (395, 1017779), (553, 726985), (2765, 145397), (3871, 103855), (19355, 20771)]