21400250

素因数分解:

$2^1\times 5^3\times {\mathrm{85601}}^1$

素因数の和:85618

約数の個数: 16

約数和(自身を含む): 40061736

約数和(自身を除く): 18661486

約数列:

[1, 2, 5, 10, 25, 50, 125, 250, 85601, 171202, 428005, 856010, 2140025, 4280050, 10700125, 21400250]

約数ペア:

[(1, 21400250), (2, 10700125), (5, 4280050), (10, 2140025), (25, 856010), (50, 428005), (125, 171202), (250, 85601)]