21768993

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{15809}}^1$

素因数の和:15838

約数の個数: 20

約数和(自身を含む): 34434180

約数和(自身を除く): 12665187

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 15809, 47427, 142281, 268753, 426843, 806259, 1280529, 2418777, 7256331, 21768993]

約数ペア:

[(1, 21768993), (3, 7256331), (9, 2418777), (17, 1280529), (27, 806259), (51, 426843), (81, 268753), (153, 142281), (459, 47427), (1377, 15809)]