21325970

素因数分解:

$2^1\times 5^1\times {\mathrm{239}}^1\times {\mathrm{8923}}^1$

素因数の和:9169

約数の個数: 16

約数和(自身を含む): 38551680

約数和(自身を除く): 17225710

約数列:

[1, 2, 5, 10, 239, 478, 1195, 2390, 8923, 17846, 44615, 89230, 2132597, 4265194, 10662985, 21325970]

約数ペア:

[(1, 21325970), (2, 10662985), (5, 4265194), (10, 2132597), (239, 89230), (478, 44615), (1195, 17846), (2390, 8923)]