21078974

素因数分解:

$2^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{40693}}^1$

素因数の和:40739

約数の個数: 16

約数和(自身を含む): 37112928

約数和(自身を除く): 16033954

約数列:

[1, 2, 7, 14, 37, 74, 259, 518, 40693, 81386, 284851, 569702, 1505641, 3011282, 10539487, 21078974]

約数ペア:

[(1, 21078974), (2, 10539487), (7, 3011282), (14, 1505641), (37, 569702), (74, 284851), (259, 81386), (518, 40693)]