21820581

素因数分解:

$3^2\times {\mathrm{569}}^1\times {\mathrm{4261}}^1$

素因数の和:4836

約数の個数: 12

約数和(自身を含む): 31581420

約数和(自身を除く): 9760839

約数列:

[1, 3, 9, 569, 1707, 4261, 5121, 12783, 38349, 2424509, 7273527, 21820581]

約数ペア:

[(1, 21820581), (3, 7273527), (9, 2424509), (569, 38349), (1707, 12783), (4261, 5121)]