80448890

素因数分解:

$2^1\times 5^1\times {\mathrm{97}}^1\times {\mathrm{197}}^1\times {\mathrm{421}}^1$

素因数の和:722

約数の個数: 32

約数和(自身を含む): 147392784

約数和(自身を除く): 66943894

約数列:

[1, 2, 5, 10, 97, 194, 197, 394, 421, 485, 842, 970, 985, 1970, 2105, 4210, 19109, 38218, 40837, 81674, 82937, 95545, 165874, 191090, 204185, 408370, 414685, 829370, 8044889, 16089778, 40224445, 80448890]

約数ペア:

[(1, 80448890), (2, 40224445), (5, 16089778), (10, 8044889), (97, 829370), (194, 414685), (197, 408370), (394, 204185), (421, 191090), (485, 165874), (842, 95545), (970, 82937), (985, 81674), (1970, 40837), (2105, 38218), (4210, 19109)]