20122580

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{21407}}^1$

素因数の和:21463

約数の個数: 24

約数和(自身を含む): 43158528

約数和(自身を除く): 23035948

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940, 21407, 42814, 85628, 107035, 214070, 428140, 1006129, 2012258, 4024516, 5030645, 10061290, 20122580]

約数ペア:

[(1, 20122580), (2, 10061290), (4, 5030645), (5, 4024516), (10, 2012258), (20, 1006129), (47, 428140), (94, 214070), (188, 107035), (235, 85628), (470, 42814), (940, 21407)]