21401535

素因数分解:

$3^1\times 5^1\times {\mathrm{421}}^1\times {\mathrm{3389}}^1$

素因数の和:3818

約数の個数: 16

約数和(自身を含む): 34333920

約数和(自身を除く): 12932385

約数列:

[1, 3, 5, 15, 421, 1263, 2105, 3389, 6315, 10167, 16945, 50835, 1426769, 4280307, 7133845, 21401535]

約数ペア:

[(1, 21401535), (3, 7133845), (5, 4280307), (15, 1426769), (421, 50835), (1263, 16945), (2105, 10167), (3389, 6315)]