21456945

素因数分解:

$3^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{4721}}^1$

素因数の和:4833

約数の個数: 24

約数和(自身を含む): 37568232

約数和(自身を除く): 16111287

約数列:

[1, 3, 5, 9, 15, 45, 101, 303, 505, 909, 1515, 4545, 4721, 14163, 23605, 42489, 70815, 212445, 476821, 1430463, 2384105, 4291389, 7152315, 21456945]

約数ペア:

[(1, 21456945), (3, 7152315), (5, 4291389), (9, 2384105), (15, 1430463), (45, 476821), (101, 212445), (303, 70815), (505, 42489), (909, 23605), (1515, 14163), (4545, 4721)]