21779961

素因数分解:

$3^1\times 7^2\times {\mathrm{229}}^1\times {\mathrm{647}}^1$

素因数の和:893

約数の個数: 24

約数和(自身を含む): 33981120

約数和(自身を除く): 12201159

約数列:

[1, 3, 7, 21, 49, 147, 229, 647, 687, 1603, 1941, 4529, 4809, 11221, 13587, 31703, 33663, 95109, 148163, 444489, 1037141, 3111423, 7259987, 21779961]

約数ペア:

[(1, 21779961), (3, 7259987), (7, 3111423), (21, 1037141), (49, 444489), (147, 148163), (229, 95109), (647, 33663), (687, 31703), (1603, 13587), (1941, 11221), (4529, 4809)]