21696740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{83449}}^1$

素因数の和:83471

約数の個数: 24

約数和(自身を含む): 49068600

約数和(自身を除く): 27371860

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 83449, 166898, 333796, 417245, 834490, 1084837, 1668980, 2169674, 4339348, 5424185, 10848370, 21696740]

約数ペア:

[(1, 21696740), (2, 10848370), (4, 5424185), (5, 4339348), (10, 2169674), (13, 1668980), (20, 1084837), (26, 834490), (52, 417245), (65, 333796), (130, 166898), (260, 83449)]