20505105

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{14699}}^1$

素因数の和:14741

約数の個数: 24

約数和(自身を含む): 36691200

約数和(自身を除く): 16186095

約数列:

[1, 3, 5, 9, 15, 31, 45, 93, 155, 279, 465, 1395, 14699, 44097, 73495, 132291, 220485, 455669, 661455, 1367007, 2278345, 4101021, 6835035, 20505105]

約数ペア:

[(1, 20505105), (3, 6835035), (5, 4101021), (9, 2278345), (15, 1367007), (31, 661455), (45, 455669), (93, 220485), (155, 132291), (279, 73495), (465, 44097), (1395, 14699)]