21625625

素因数分解:

$5^4\times 7^1\times {\mathrm{4943}}^1$

素因数の和:4970

約数の個数: 20

約数和(自身を含む): 30890112

約数和(自身を除く): 9264487

約数列:

[1, 5, 7, 25, 35, 125, 175, 625, 875, 4375, 4943, 24715, 34601, 123575, 173005, 617875, 865025, 3089375, 4325125, 21625625]

約数ペア:

[(1, 21625625), (5, 4325125), (7, 3089375), (25, 865025), (35, 617875), (125, 173005), (175, 123575), (625, 34601), (875, 24715), (4375, 4943)]