21411945

素因数分解:

$3^5\times 5^1\times {\mathrm{17623}}^1$

素因数の和:17643

約数の個数: 24

約数和(自身を含む): 38490816

約数和(自身を除く): 17078871

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 1215, 17623, 52869, 88115, 158607, 264345, 475821, 793035, 1427463, 2379105, 4282389, 7137315, 21411945]

約数ペア:

[(1, 21411945), (3, 7137315), (5, 4282389), (9, 2379105), (15, 1427463), (27, 793035), (45, 475821), (81, 264345), (135, 158607), (243, 88115), (405, 52869), (1215, 17623)]