90997780

素因数分解:

$2^2\times 5^1\times {\mathrm{977}}^1\times {\mathrm{4657}}^1$

素因数の和:5643

約数の個数: 24

約数和(自身を含む): 191332008

約数和(自身を除く): 100334228

約数列:

[1, 2, 4, 5, 10, 20, 977, 1954, 3908, 4657, 4885, 9314, 9770, 18628, 19540, 23285, 46570, 93140, 4549889, 9099778, 18199556, 22749445, 45498890, 90997780]

約数ペア:

[(1, 90997780), (2, 45498890), (4, 22749445), (5, 18199556), (10, 9099778), (20, 4549889), (977, 93140), (1954, 46570), (3908, 23285), (4657, 19540), (4885, 18628), (9314, 9770)]