19811243879

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{1527349}}^1$

素因数の和:1527482

約数の個数: 16

約数和(自身を含む): 24193224000

約数和(自身を除く): 4381980121

約数列:

[1, 7, 17, 109, 119, 763, 1853, 12971, 1527349, 10691443, 25964933, 166481041, 181754531, 1165367287, 2830177697, 19811243879]

約数ペア:

[(1, 19811243879), (7, 2830177697), (17, 1165367287), (109, 181754531), (119, 166481041), (763, 25964933), (1853, 10691443), (12971, 1527349)]