20205880

素因数分解:

$2^3\times 5^1\times {\mathrm{107}}^1\times {\mathrm{4721}}^1$

素因数の和:4839

約数の個数: 32

約数和(自身を含む): 45897840

約数和(自身を除く): 25691960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 107, 214, 428, 535, 856, 1070, 2140, 4280, 4721, 9442, 18884, 23605, 37768, 47210, 94420, 188840, 505147, 1010294, 2020588, 2525735, 4041176, 5051470, 10102940, 20205880]

約数ペア:

[(1, 20205880), (2, 10102940), (4, 5051470), (5, 4041176), (8, 2525735), (10, 2020588), (20, 1010294), (40, 505147), (107, 188840), (214, 94420), (428, 47210), (535, 37768), (856, 23605), (1070, 18884), (2140, 9442), (4280, 4721)]