21115665571

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{727399}}^1$

素因数の和:727459

約数の個数: 32

約数和(自身を含む): 29328768000

約数和(自身を除く): 8213102429

約数列:

[1, 7, 11, 13, 29, 77, 91, 143, 203, 319, 377, 1001, 2233, 2639, 4147, 29029, 727399, 5091793, 8001389, 9456187, 21094571, 56009723, 66193309, 104018057, 147661997, 232040281, 274229423, 728126399, 1624281967, 1919605961, 3016523653, 21115665571]

約数ペア:

[(1, 21115665571), (7, 3016523653), (11, 1919605961), (13, 1624281967), (29, 728126399), (77, 274229423), (91, 232040281), (143, 147661997), (203, 104018057), (319, 66193309), (377, 56009723), (1001, 21094571), (2233, 9456187), (2639, 8001389), (4147, 5091793), (29029, 727399)]