201561875

素因数分解:

$5^4\times {\mathrm{521}}^1\times {\mathrm{619}}^1$

素因数の和:1160

約数の個数: 20

約数和(自身を含む): 252762840

約数和(自身を除く): 51200965

約数列:

[1, 5, 25, 125, 521, 619, 625, 2605, 3095, 13025, 15475, 65125, 77375, 322499, 325625, 386875, 1612495, 8062475, 40312375, 201561875]

約数ペア:

[(1, 201561875), (5, 40312375), (25, 8062475), (125, 1612495), (521, 386875), (619, 325625), (625, 322499), (2605, 77375), (3095, 65125), (13025, 15475)]