21712455

素因数分解:

$3^4\times 5^1\times {\mathrm{53611}}^1$

素因数の和:53628

約数の個数: 20

約数和(自身を含む): 38922312

約数和(自身を除く): 17209857

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 53611, 160833, 268055, 482499, 804165, 1447497, 2412495, 4342491, 7237485, 21712455]

約数ペア:

[(1, 21712455), (3, 7237485), (5, 4342491), (9, 2412495), (15, 1447497), (27, 804165), (45, 482499), (81, 268055), (135, 160833), (405, 53611)]