20454850

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31469}}^1$

素因数の和:31494

約数の個数: 24

約数和(自身を含む): 40973940

約数和(自身を除く): 20519090

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 325, 650, 31469, 62938, 157345, 314690, 409097, 786725, 818194, 1573450, 2045485, 4090970, 10227425, 20454850]

約数ペア:

[(1, 20454850), (2, 10227425), (5, 4090970), (10, 2045485), (13, 1573450), (25, 818194), (26, 786725), (50, 409097), (65, 314690), (130, 157345), (325, 62938), (650, 31469)]