20287485

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{14543}}^1$

素因数の和:14585

約数の個数: 24

約数和(自身を含む): 36301824

約数和(自身を除く): 16014339

約数列:

[1, 3, 5, 9, 15, 31, 45, 93, 155, 279, 465, 1395, 14543, 43629, 72715, 130887, 218145, 450833, 654435, 1352499, 2254165, 4057497, 6762495, 20287485]

約数ペア:

[(1, 20287485), (3, 6762495), (5, 4057497), (9, 2254165), (15, 1352499), (31, 654435), (45, 450833), (93, 218145), (155, 130887), (279, 72715), (465, 43629), (1395, 14543)]