19907810

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{153137}}^1$

素因数の和:153157

約数の個数: 16

約数和(自身を含む): 38590776

約数和(自身を除く): 18682966

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 153137, 306274, 765685, 1531370, 1990781, 3981562, 9953905, 19907810]

約数ペア:

[(1, 19907810), (2, 9953905), (5, 3981562), (10, 1990781), (13, 1531370), (26, 765685), (65, 306274), (130, 153137)]