28801825

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{401}}^1$

素因数の和:454

約数の個数: 36

約数和(自身を含む): 41049828

約数和(自身を除く): 12248003

約数列:

[1, 5, 13, 17, 25, 65, 85, 169, 221, 325, 401, 425, 845, 1105, 2005, 2873, 4225, 5213, 5525, 6817, 10025, 14365, 26065, 34085, 67769, 71825, 88621, 130325, 170425, 338845, 443105, 1152073, 1694225, 2215525, 5760365, 28801825]

約数ペア:

[(1, 28801825), (5, 5760365), (13, 2215525), (17, 1694225), (25, 1152073), (65, 443105), (85, 338845), (169, 170425), (221, 130325), (325, 88621), (401, 71825), (425, 67769), (845, 34085), (1105, 26065), (2005, 14365), (2873, 10025), (4225, 6817), (5213, 5525)]