21588680

素因数分解:

$2^3\times 5^1\times {\mathrm{457}}^1\times {\mathrm{1181}}^1$

素因数の和:1649

約数の個数: 32

約数和(自身を含む): 48722040

約数和(自身を除く): 27133360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 457, 914, 1181, 1828, 2285, 2362, 3656, 4570, 4724, 5905, 9140, 9448, 11810, 18280, 23620, 47240, 539717, 1079434, 2158868, 2698585, 4317736, 5397170, 10794340, 21588680]

約数ペア:

[(1, 21588680), (2, 10794340), (4, 5397170), (5, 4317736), (8, 2698585), (10, 2158868), (20, 1079434), (40, 539717), (457, 47240), (914, 23620), (1181, 18280), (1828, 11810), (2285, 9448), (2362, 9140), (3656, 5905), (4570, 4724)]