208721853

素因数分解:

$3^4\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{823}}^1$

素因数の和:967

約数の個数: 40

約数和(自身を含む): 325433856

約数和(自身を除く): 116712003

約数列:

[1, 3, 9, 27, 31, 81, 93, 101, 279, 303, 823, 837, 909, 2469, 2511, 2727, 3131, 7407, 8181, 9393, 22221, 25513, 28179, 66663, 76539, 83123, 84537, 229617, 249369, 253611, 688851, 748107, 2066553, 2244321, 2576813, 6732963, 7730439, 23191317, 69573951, 208721853]

約数ペア:

[(1, 208721853), (3, 69573951), (9, 23191317), (27, 7730439), (31, 6732963), (81, 2576813), (93, 2244321), (101, 2066553), (279, 748107), (303, 688851), (823, 253611), (837, 249369), (909, 229617), (2469, 84537), (2511, 83123), (2727, 76539), (3131, 66663), (7407, 28179), (8181, 25513), (9393, 22221)]