21658221

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{10889}}^1$

素因数の和:10925

約数の個数: 24

約数和(自身を含む): 35675640

約数和(自身を除く): 14017419

約数列:

[1, 3, 9, 13, 17, 39, 51, 117, 153, 221, 663, 1989, 10889, 32667, 98001, 141557, 185113, 424671, 555339, 1274013, 1666017, 2406469, 7219407, 21658221]

約数ペア:

[(1, 21658221), (3, 7219407), (9, 2406469), (13, 1666017), (17, 1274013), (39, 555339), (51, 424671), (117, 185113), (153, 141557), (221, 98001), (663, 32667), (1989, 10889)]