20914375

素因数分解:

$5^4\times {\mathrm{109}}^1\times {\mathrm{307}}^1$

素因数の和:436

約数の個数: 20

約数和(自身を含む): 26460280

約数和(自身を除く): 5545905

約数列:

[1, 5, 25, 109, 125, 307, 545, 625, 1535, 2725, 7675, 13625, 33463, 38375, 68125, 167315, 191875, 836575, 4182875, 20914375]

約数ペア:

[(1, 20914375), (5, 4182875), (25, 836575), (109, 191875), (125, 167315), (307, 68125), (545, 38375), (625, 33463), (1535, 13625), (2725, 7675)]