19869980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{76423}}^1$

素因数の和:76445

約数の個数: 24

約数和(自身を含む): 44937312

約数和(自身を除く): 25067332

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 76423, 152846, 305692, 382115, 764230, 993499, 1528460, 1986998, 3973996, 4967495, 9934990, 19869980]

約数ペア:

[(1, 19869980), (2, 9934990), (4, 4967495), (5, 3973996), (10, 1986998), (13, 1528460), (20, 993499), (26, 764230), (52, 382115), (65, 305692), (130, 152846), (260, 76423)]