21229791

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{487}}^1\times {\mathrm{1321}}^1$

素因数の和:1822

約数の個数: 16

約数和(自身を含む): 30966528

約数和(自身を除く): 9736737

約数列:

[1, 3, 11, 33, 487, 1321, 1461, 3963, 5357, 14531, 16071, 43593, 643327, 1929981, 7076597, 21229791]

約数ペア:

[(1, 21229791), (3, 7076597), (11, 1929981), (33, 643327), (487, 43593), (1321, 16071), (1461, 14531), (3963, 5357)]