20182825

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{281}}^1$

素因数の和:334

約数の個数: 36

約数和(自身を含む): 28796148

約数和(自身を除く): 8613323

約数列:

[1, 5, 13, 17, 25, 65, 85, 169, 221, 281, 325, 425, 845, 1105, 1405, 2873, 3653, 4225, 4777, 5525, 7025, 14365, 18265, 23885, 47489, 62101, 71825, 91325, 119425, 237445, 310505, 807313, 1187225, 1552525, 4036565, 20182825]

約数ペア:

[(1, 20182825), (5, 4036565), (13, 1552525), (17, 1187225), (25, 807313), (65, 310505), (85, 237445), (169, 119425), (221, 91325), (281, 71825), (325, 62101), (425, 47489), (845, 23885), (1105, 18265), (1405, 14365), (2873, 7025), (3653, 5525), (4225, 4777)]