21208625

素因数分解:

$5^3\times {\mathrm{383}}^1\times {\mathrm{443}}^1$

素因数の和:841

約数の個数: 16

約数和(自身を含む): 26597376

約数和(自身を除く): 5388751

約数列:

[1, 5, 25, 125, 383, 443, 1915, 2215, 9575, 11075, 47875, 55375, 169669, 848345, 4241725, 21208625]

約数ペア:

[(1, 21208625), (5, 4241725), (25, 848345), (125, 169669), (383, 55375), (443, 47875), (1915, 11075), (2215, 9575)]