20045240

素因数分解:

$2^3\times 5^1\times {\mathrm{501131}}^1$

素因数の和:501142

約数の個数: 16

約数和(自身を含む): 45101880

約数和(自身を除く): 25056640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 501131, 1002262, 2004524, 2505655, 4009048, 5011310, 10022620, 20045240]

約数ペア:

[(1, 20045240), (2, 10022620), (4, 5011310), (5, 4009048), (8, 2505655), (10, 2004524), (20, 1002262), (40, 501131)]