20855445

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{433}}^1$

素因数の和:486

約数の個数: 48

約数和(自身を含む): 38122560

約数和(自身を除く): 17267115

約数列:

[1, 3, 5, 13, 15, 19, 39, 57, 65, 95, 169, 195, 247, 285, 433, 507, 741, 845, 1235, 1299, 2165, 2535, 3211, 3705, 5629, 6495, 8227, 9633, 16055, 16887, 24681, 28145, 41135, 48165, 73177, 84435, 106951, 123405, 219531, 320853, 365885, 534755, 1097655, 1390363, 1604265, 4171089, 6951815, 20855445]

約数ペア:

[(1, 20855445), (3, 6951815), (5, 4171089), (13, 1604265), (15, 1390363), (19, 1097655), (39, 534755), (57, 365885), (65, 320853), (95, 219531), (169, 123405), (195, 106951), (247, 84435), (285, 73177), (433, 48165), (507, 41135), (741, 28145), (845, 24681), (1235, 16887), (1299, 16055), (2165, 9633), (2535, 8227), (3211, 6495), (3705, 5629)]