12738125

素因数分解:

$5^4\times {\mathrm{89}}^1\times {\mathrm{229}}^1$

素因数の和:338

約数の個数: 20

約数和(自身を含む): 16166700

約数和(自身を除く): 3428575

約数列:

[1, 5, 25, 89, 125, 229, 445, 625, 1145, 2225, 5725, 11125, 20381, 28625, 55625, 101905, 143125, 509525, 2547625, 12738125]

約数ペア:

[(1, 12738125), (5, 2547625), (25, 509525), (89, 143125), (125, 101905), (229, 55625), (445, 28625), (625, 20381), (1145, 11125), (2225, 5725)]