81794780

素因数分解:

$2^2\times 5^1\times {\mathrm{653}}^1\times {\mathrm{6263}}^1$

素因数の和:6925

約数の個数: 24

約数和(自身を含む): 172059552

約数和(自身を除く): 90264772

約数列:

[1, 2, 4, 5, 10, 20, 653, 1306, 2612, 3265, 6263, 6530, 12526, 13060, 25052, 31315, 62630, 125260, 4089739, 8179478, 16358956, 20448695, 40897390, 81794780]

約数ペア:

[(1, 81794780), (2, 40897390), (4, 20448695), (5, 16358956), (10, 8179478), (20, 4089739), (653, 125260), (1306, 62630), (2612, 31315), (3265, 25052), (6263, 13060), (6530, 12526)]