21180399

素因数分解:

$3^1\times {\mathrm{157}}^1\times {\mathrm{193}}^1\times {\mathrm{233}}^1$

素因数の和:586

約数の個数: 16

約数和(自身を含む): 28690272

約数和(自身を除く): 7509873

約数列:

[1, 3, 157, 193, 233, 471, 579, 699, 30301, 36581, 44969, 90903, 109743, 134907, 7060133, 21180399]

約数ペア:

[(1, 21180399), (3, 7060133), (157, 134907), (193, 109743), (233, 90903), (471, 44969), (579, 36581), (699, 30301)]