21720579

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{433}}^1\times {\mathrm{727}}^1$

素因数の和:1186

約数の個数: 16

約数和(自身を含む): 30331392

約数和(自身を除く): 8610813

約数列:

[1, 3, 23, 69, 433, 727, 1299, 2181, 9959, 16721, 29877, 50163, 314791, 944373, 7240193, 21720579]

約数ペア:

[(1, 21720579), (3, 7240193), (23, 944373), (69, 314791), (433, 50163), (727, 29877), (1299, 16721), (2181, 9959)]