121517991

素因数分解:

$3^2\times 7^2\times {\mathrm{71}}^1\times {\mathrm{3881}}^1$

素因数の和:3972

約数の個数: 36

約数和(自身を含む): 207112464

約数和(自身を除く): 85594473

約数列:

[1, 3, 7, 9, 21, 49, 63, 71, 147, 213, 441, 497, 639, 1491, 3479, 3881, 4473, 10437, 11643, 27167, 31311, 34929, 81501, 190169, 244503, 275551, 570507, 826653, 1711521, 1928857, 2479959, 5786571, 13501999, 17359713, 40505997, 121517991]

約数ペア:

[(1, 121517991), (3, 40505997), (7, 17359713), (9, 13501999), (21, 5786571), (49, 2479959), (63, 1928857), (71, 1711521), (147, 826653), (213, 570507), (441, 275551), (497, 244503), (639, 190169), (1491, 81501), (3479, 34929), (3881, 31311), (4473, 27167), (10437, 11643)]