21284770

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{163729}}^1$

素因数の和:163749

約数の個数: 16

約数和(自身を含む): 41259960

約数和(自身を除く): 19975190

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 163729, 327458, 818645, 1637290, 2128477, 4256954, 10642385, 21284770]

約数ペア:

[(1, 21284770), (2, 10642385), (5, 4256954), (10, 2128477), (13, 1637290), (26, 818645), (65, 327458), (130, 163729)]