21126250

素因数分解:

$2^1\times 5^4\times {\mathrm{16901}}^1$

素因数の和:16923

約数の個数: 20

約数和(自身を含む): 39601386

約数和(自身を除く): 18475136

約数列:

[1, 2, 5, 10, 25, 50, 125, 250, 625, 1250, 16901, 33802, 84505, 169010, 422525, 845050, 2112625, 4225250, 10563125, 21126250]

約数ペア:

[(1, 21126250), (2, 10563125), (5, 4225250), (10, 2112625), (25, 845050), (50, 422525), (125, 169010), (250, 84505), (625, 33802), (1250, 16901)]