856400560

素因数分解:

$2^4\times 5^1\times {\mathrm{10705007}}^1$

素因数の和:10705020

約数の個数: 20

約数和(自身を含む): 1991131488

約数和(自身を除く): 1134730928

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 10705007, 21410014, 42820028, 53525035, 85640056, 107050070, 171280112, 214100140, 428200280, 856400560]

約数ペア:

[(1, 856400560), (2, 428200280), (4, 214100140), (5, 171280112), (8, 107050070), (10, 85640056), (16, 53525035), (20, 42820028), (40, 21410014), (80, 10705007)]