28657485

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{20543}}^1$

素因数の和:20585

約数の個数: 24

約数和(自身を含む): 51277824

約数和(自身を除く): 22620339

約数列:

[1, 3, 5, 9, 15, 31, 45, 93, 155, 279, 465, 1395, 20543, 61629, 102715, 184887, 308145, 636833, 924435, 1910499, 3184165, 5731497, 9552495, 28657485]

約数ペア:

[(1, 28657485), (3, 9552495), (5, 5731497), (9, 3184165), (15, 1910499), (31, 924435), (45, 636833), (93, 308145), (155, 184887), (279, 102715), (465, 61629), (1395, 20543)]