42557780

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{21937}}^1$

素因数の和:22043

約数の個数: 24

約数和(自身を含む): 90296808

約数和(自身を除く): 47739028

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 970, 1940, 21937, 43874, 87748, 109685, 219370, 438740, 2127889, 4255778, 8511556, 10639445, 21278890, 42557780]

約数ペア:

[(1, 42557780), (2, 21278890), (4, 10639445), (5, 8511556), (10, 4255778), (20, 2127889), (97, 438740), (194, 219370), (388, 109685), (485, 87748), (970, 43874), (1940, 21937)]