81263020

素因数分解:

$2^2\times 5^1\times {\mathrm{823}}^1\times {\mathrm{4937}}^1$

素因数の和:5769

約数の個数: 24

約数和(自身を含む): 170894304

約数和(自身を除く): 89631284

約数列:

[1, 2, 4, 5, 10, 20, 823, 1646, 3292, 4115, 4937, 8230, 9874, 16460, 19748, 24685, 49370, 98740, 4063151, 8126302, 16252604, 20315755, 40631510, 81263020]

約数ペア:

[(1, 81263020), (2, 40631510), (4, 20315755), (5, 16252604), (10, 8126302), (20, 4063151), (823, 98740), (1646, 49370), (3292, 24685), (4115, 19748), (4937, 16460), (8230, 9874)]