81725990

素因数分解:

$2^1\times 5^1\times {\mathrm{2531}}^1\times {\mathrm{3229}}^1$

素因数の和:5767

約数の個数: 16

約数和(自身を含む): 147210480

約数和(自身を除く): 65484490

約数列:

[1, 2, 5, 10, 2531, 3229, 5062, 6458, 12655, 16145, 25310, 32290, 8172599, 16345198, 40862995, 81725990]

約数ペア:

[(1, 81725990), (2, 40862995), (5, 16345198), (10, 8172599), (2531, 32290), (3229, 25310), (5062, 16145), (6458, 12655)]