21457629

素因数分解:

$3^5\times {\mathrm{227}}^1\times {\mathrm{389}}^1$

素因数の和:631

約数の個数: 24

約数和(自身を含む): 32366880

約数和(自身を除く): 10909251

約数列:

[1, 3, 9, 27, 81, 227, 243, 389, 681, 1167, 2043, 3501, 6129, 10503, 18387, 31509, 55161, 88303, 94527, 264909, 794727, 2384181, 7152543, 21457629]

約数ペア:

[(1, 21457629), (3, 7152543), (9, 2384181), (27, 794727), (81, 264909), (227, 94527), (243, 88303), (389, 55161), (681, 31509), (1167, 18387), (2043, 10503), (3501, 6129)]