20721129

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{4391}}^1$

素因数の和:4429

約数の個数: 24

約数和(自身を含む): 32711616

約数和(自身を除く): 11990487

約数列:

[1, 3, 11, 13, 33, 39, 121, 143, 363, 429, 1573, 4391, 4719, 13173, 48301, 57083, 144903, 171249, 531311, 627913, 1593933, 1883739, 6907043, 20721129]

約数ペア:

[(1, 20721129), (3, 6907043), (11, 1883739), (13, 1593933), (33, 627913), (39, 531311), (121, 171249), (143, 144903), (363, 57083), (429, 48301), (1573, 13173), (4391, 4719)]