28821555

素因数分解:

$3^3\times 5^1\times 7^2\times {\mathrm{4357}}^1$

素因数の和:4385

約数の個数: 48

約数和(自身を含む): 59617440

約数和(自身を除く): 30795885

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 49, 63, 105, 135, 147, 189, 245, 315, 441, 735, 945, 1323, 2205, 4357, 6615, 13071, 21785, 30499, 39213, 65355, 91497, 117639, 152495, 196065, 213493, 274491, 457485, 588195, 640479, 823473, 1067465, 1372455, 1921437, 3202395, 4117365, 5764311, 9607185, 28821555]

約数ペア:

[(1, 28821555), (3, 9607185), (5, 5764311), (7, 4117365), (9, 3202395), (15, 1921437), (21, 1372455), (27, 1067465), (35, 823473), (45, 640479), (49, 588195), (63, 457485), (105, 274491), (135, 213493), (147, 196065), (189, 152495), (245, 117639), (315, 91497), (441, 65355), (735, 39213), (945, 30499), (1323, 21785), (2205, 13071), (4357, 6615)]