21250790

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{193189}}^1$

素因数の和:193207

約数の個数: 16

約数和(自身を含む): 41729040

約数和(自身を除く): 20478250

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 193189, 386378, 965945, 1931890, 2125079, 4250158, 10625395, 21250790]

約数ペア:

[(1, 21250790), (2, 10625395), (5, 4250158), (10, 2125079), (11, 1931890), (22, 965945), (55, 386378), (110, 193189)]