19747931

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{151}}^1\times {\mathrm{157}}^1$

素因数の和:339

約数の個数: 24

約数和(自身を含む): 24640416

約数和(自身を除く): 4892485

約数列:

[1, 7, 17, 49, 119, 151, 157, 833, 1057, 1099, 2567, 2669, 7399, 7693, 17969, 18683, 23707, 125783, 130781, 165949, 403019, 1161643, 2821133, 19747931]

約数ペア:

[(1, 19747931), (7, 2821133), (17, 1161643), (49, 403019), (119, 165949), (151, 130781), (157, 125783), (833, 23707), (1057, 18683), (1099, 17969), (2567, 7693), (2669, 7399)]