20120215

素因数分解:

$5^1\times {\mathrm{113}}^1\times {\mathrm{149}}^1\times {\mathrm{239}}^1$

素因数の和:506

約数の個数: 16

約数和(自身を含む): 24624000

約数和(自身を除く): 4503785

約数列:

[1, 5, 113, 149, 239, 565, 745, 1195, 16837, 27007, 35611, 84185, 135035, 178055, 4024043, 20120215]

約数ペア:

[(1, 20120215), (5, 4024043), (113, 178055), (149, 135035), (239, 84185), (565, 35611), (745, 27007), (1195, 16837)]