291275721

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{107}}^1\times {\mathrm{887}}^1$

素因数の和:1042

約数の個数: 48

約数和(自身を含む): 478752768

約数和(自身を除く): 187477047

約数列:

[1, 3, 9, 11, 31, 33, 93, 99, 107, 279, 321, 341, 887, 963, 1023, 1177, 2661, 3069, 3317, 3531, 7983, 9757, 9951, 10593, 27497, 29271, 29853, 36487, 82491, 87813, 94909, 109461, 247473, 284727, 302467, 328383, 854181, 907401, 1043999, 2722203, 2942179, 3131997, 8826537, 9395991, 26479611, 32363969, 97091907, 291275721]

約数ペア:

[(1, 291275721), (3, 97091907), (9, 32363969), (11, 26479611), (31, 9395991), (33, 8826537), (93, 3131997), (99, 2942179), (107, 2722203), (279, 1043999), (321, 907401), (341, 854181), (887, 328383), (963, 302467), (1023, 284727), (1177, 247473), (2661, 109461), (3069, 94909), (3317, 87813), (3531, 82491), (7983, 36487), (9757, 29853), (9951, 29271), (10593, 27497)]