21400730

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{164621}}^1$

素因数の和:164641

約数の個数: 16

約数和(自身を含む): 41484744

約数和(自身を除く): 20084014

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 164621, 329242, 823105, 1646210, 2140073, 4280146, 10700365, 21400730]

約数ペア:

[(1, 21400730), (2, 10700365), (5, 4280146), (10, 2140073), (13, 1646210), (26, 823105), (65, 329242), (130, 164621)]