21901869

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{197}}^1\times {\mathrm{1123}}^1$

素因数の和:1337

約数の個数: 24

約数和(自身を含む): 34718112

約数和(自身を除く): 12816243

約数列:

[1, 3, 9, 11, 33, 99, 197, 591, 1123, 1773, 2167, 3369, 6501, 10107, 12353, 19503, 37059, 111177, 221231, 663693, 1991079, 2433541, 7300623, 21901869]

約数ペア:

[(1, 21901869), (3, 7300623), (9, 2433541), (11, 1991079), (33, 663693), (99, 221231), (197, 111177), (591, 37059), (1123, 19503), (1773, 12353), (2167, 10107), (3369, 6501)]