641655

素因数分解:

$3^3\times 5^1\times 7^2\times {\mathrm{97}}^1$

素因数の和:125

約数の個数: 48

約数和(自身を含む): 1340640

約数和(自身を除く): 698985

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 49, 63, 97, 105, 135, 147, 189, 245, 291, 315, 441, 485, 679, 735, 873, 945, 1323, 1455, 2037, 2205, 2619, 3395, 4365, 4753, 6111, 6615, 10185, 13095, 14259, 18333, 23765, 30555, 42777, 71295, 91665, 128331, 213885, 641655]

約数ペア:

[(1, 641655), (3, 213885), (5, 128331), (7, 91665), (9, 71295), (15, 42777), (21, 30555), (27, 23765), (35, 18333), (45, 14259), (49, 13095), (63, 10185), (97, 6615), (105, 6111), (135, 4753), (147, 4365), (189, 3395), (245, 2619), (291, 2205), (315, 2037), (441, 1455), (485, 1323), (679, 945), (735, 873)]