81633740

素因数分解:

$2^2\times 5^1\times {\mathrm{227}}^1\times {\mathrm{17981}}^1$

素因数の和:18217

約数の個数: 24

約数和(自身を含む): 172195632

約数和(自身を除く): 90561892

約数列:

[1, 2, 4, 5, 10, 20, 227, 454, 908, 1135, 2270, 4540, 17981, 35962, 71924, 89905, 179810, 359620, 4081687, 8163374, 16326748, 20408435, 40816870, 81633740]

約数ペア:

[(1, 81633740), (2, 40816870), (4, 20408435), (5, 16326748), (10, 8163374), (20, 4081687), (227, 359620), (454, 179810), (908, 89905), (1135, 71924), (2270, 35962), (4540, 17981)]