138125

素因数分解:

$5^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1$

素因数の和:50

約数の個数: 20

約数和(自身を含む): 196812

約数和(自身を除く): 58687

約数列:

[1, 5, 13, 17, 25, 65, 85, 125, 221, 325, 425, 625, 1105, 1625, 2125, 5525, 8125, 10625, 27625, 138125]

約数ペア:

[(1, 138125), (5, 27625), (13, 10625), (17, 8125), (25, 5525), (65, 2125), (85, 1625), (125, 1105), (221, 625), (325, 425)]