21403185

素因数分解:

$3^1\times 5^1\times {\mathrm{877}}^1\times {\mathrm{1627}}^1$

素因数の和:2512

約数の個数: 16

約数和(自身を含む): 34305216

約数和(自身を除く): 12902031

約数列:

[1, 3, 5, 15, 877, 1627, 2631, 4385, 4881, 8135, 13155, 24405, 1426879, 4280637, 7134395, 21403185]

約数ペア:

[(1, 21403185), (3, 7134395), (5, 4280637), (15, 1426879), (877, 24405), (1627, 13155), (2631, 8135), (4385, 4881)]