21298347

素因数分解:

$3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{9137}}^1$

素因数の和:9187

約数の個数: 24

約数和(自身を含む): 36113376

約数和(自身を除く): 14815029

約数列:

[1, 3, 7, 9, 21, 37, 63, 111, 259, 333, 777, 2331, 9137, 27411, 63959, 82233, 191877, 338069, 575631, 1014207, 2366483, 3042621, 7099449, 21298347]

約数ペア:

[(1, 21298347), (3, 7099449), (7, 3042621), (9, 2366483), (21, 1014207), (37, 575631), (63, 338069), (111, 191877), (259, 82233), (333, 63959), (777, 27411), (2331, 9137)]