80131580

素因数分解:

$2^2\times 5^1\times {\mathrm{887}}^1\times {\mathrm{4517}}^1$

素因数の和:5413

約数の個数: 24

約数和(自身を含む): 168503328

約数和(自身を除く): 88371748

約数列:

[1, 2, 4, 5, 10, 20, 887, 1774, 3548, 4435, 4517, 8870, 9034, 17740, 18068, 22585, 45170, 90340, 4006579, 8013158, 16026316, 20032895, 40065790, 80131580]

約数ペア:

[(1, 80131580), (2, 40065790), (4, 20032895), (5, 16026316), (10, 8013158), (20, 4006579), (887, 90340), (1774, 45170), (3548, 22585), (4435, 18068), (4517, 17740), (8870, 9034)]