20685125

素因数分解:

$5^3\times {\mathrm{127}}^1\times {\mathrm{1303}}^1$

素因数の和:1445

約数の個数: 16

約数和(自身を含む): 26038272

約数和(自身を除く): 5353147

約数列:

[1, 5, 25, 125, 127, 635, 1303, 3175, 6515, 15875, 32575, 162875, 165481, 827405, 4137025, 20685125]

約数ペア:

[(1, 20685125), (5, 4137025), (25, 827405), (125, 165481), (127, 162875), (635, 32575), (1303, 15875), (3175, 6515)]