20216980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{144407}}^1$

素因数の和:144423

約数の個数: 24

約数和(自身を含む): 48521088

約数和(自身を除く): 28304108

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 144407, 288814, 577628, 722035, 1010849, 1444070, 2021698, 2888140, 4043396, 5054245, 10108490, 20216980]

約数ペア:

[(1, 20216980), (2, 10108490), (4, 5054245), (5, 4043396), (7, 2888140), (10, 2021698), (14, 1444070), (20, 1010849), (28, 722035), (35, 577628), (70, 288814), (140, 144407)]