20302580

素因数分解:

$2^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{2557}}^1$

素因数の和:2963

約数の個数: 24

約数和(自身を含む): 42759528

約数和(自身を除く): 22456948

約数列:

[1, 2, 4, 5, 10, 20, 397, 794, 1588, 1985, 2557, 3970, 5114, 7940, 10228, 12785, 25570, 51140, 1015129, 2030258, 4060516, 5075645, 10151290, 20302580]

約数ペア:

[(1, 20302580), (2, 10151290), (4, 5075645), (5, 4060516), (10, 2030258), (20, 1015129), (397, 51140), (794, 25570), (1588, 12785), (1985, 10228), (2557, 7940), (3970, 5114)]