21580268

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{181}}^1\times {\mathrm{727}}^1$

素因数の和:953

約数の個数: 24

約数和(自身を含む): 38953824

約数和(自身を除く): 17373556

約数列:

[1, 2, 4, 41, 82, 164, 181, 362, 724, 727, 1454, 2908, 7421, 14842, 29684, 29807, 59614, 119228, 131587, 263174, 526348, 5395067, 10790134, 21580268]

約数ペア:

[(1, 21580268), (2, 10790134), (4, 5395067), (41, 526348), (82, 263174), (164, 131587), (181, 119228), (362, 59614), (724, 29807), (727, 29684), (1454, 14842), (2908, 7421)]