21941997

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^2$

素因数の和:158

約数の個数: 48

約数和(自身を含む): 38134272

約数和(自身を除く): 16192275

約数列:

[1, 3, 7, 11, 21, 33, 43, 47, 77, 129, 141, 231, 301, 329, 473, 517, 903, 987, 1419, 1551, 2021, 2209, 3311, 3619, 6063, 6627, 9933, 10857, 14147, 15463, 22231, 24299, 42441, 46389, 66693, 72897, 94987, 155617, 170093, 284961, 466851, 510279, 664909, 1044857, 1994727, 3134571, 7313999, 21941997]

約数ペア:

[(1, 21941997), (3, 7313999), (7, 3134571), (11, 1994727), (21, 1044857), (33, 664909), (43, 510279), (47, 466851), (77, 284961), (129, 170093), (141, 155617), (231, 94987), (301, 72897), (329, 66693), (473, 46389), (517, 42441), (903, 24299), (987, 22231), (1419, 15463), (1551, 14147), (2021, 10857), (2209, 9933), (3311, 6627), (3619, 6063)]