21690849

素因数分解:

$3^1\times {\mathrm{97}}^1\times {\mathrm{131}}^1\times {\mathrm{569}}^1$

素因数の和:800

約数の個数: 16

約数和(自身を含む): 29494080

約数和(自身を除く): 7803231

約数列:

[1, 3, 97, 131, 291, 393, 569, 1707, 12707, 38121, 55193, 74539, 165579, 223617, 7230283, 21690849]

約数ペア:

[(1, 21690849), (3, 7230283), (97, 223617), (131, 165579), (291, 74539), (393, 55193), (569, 38121), (1707, 12707)]