18788125

素因数分解:

$5^4\times {\mathrm{23}}^1\times {\mathrm{1307}}^1$

素因数の和:1350

約数の個数: 20

約数和(自身を含む): 24517152

約数和(自身を除く): 5729027

約数列:

[1, 5, 23, 25, 115, 125, 575, 625, 1307, 2875, 6535, 14375, 30061, 32675, 150305, 163375, 751525, 816875, 3757625, 18788125]

約数ペア:

[(1, 18788125), (5, 3757625), (23, 816875), (25, 751525), (115, 163375), (125, 150305), (575, 32675), (625, 30061), (1307, 14375), (2875, 6535)]