21266875

素因数分解:

$5^4\times 7^1\times {\mathrm{4861}}^1$

素因数の和:4888

約数の個数: 20

約数和(自身を含む): 30377776

約数和(自身を除く): 9110901

約数列:

[1, 5, 7, 25, 35, 125, 175, 625, 875, 4375, 4861, 24305, 34027, 121525, 170135, 607625, 850675, 3038125, 4253375, 21266875]

約数ペア:

[(1, 21266875), (5, 4253375), (7, 3038125), (25, 850675), (35, 607625), (125, 170135), (175, 121525), (625, 34027), (875, 24305), (4375, 4861)]