21270730

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{163621}}^1$

素因数の和:163641

約数の個数: 16

約数和(自身を含む): 41232744

約数和(自身を除く): 19962014

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 163621, 327242, 818105, 1636210, 2127073, 4254146, 10635365, 21270730]

約数ペア:

[(1, 21270730), (2, 10635365), (5, 4254146), (10, 2127073), (13, 1636210), (26, 818105), (65, 327242), (130, 163621)]