18788180

素因数分解:

$2^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{6857}}^1$

素因数の和:7003

約数の個数: 24

約数和(自身を含む): 39748968

約数和(自身を除く): 20960788

約数列:

[1, 2, 4, 5, 10, 20, 137, 274, 548, 685, 1370, 2740, 6857, 13714, 27428, 34285, 68570, 137140, 939409, 1878818, 3757636, 4697045, 9394090, 18788180]

約数ペア:

[(1, 18788180), (2, 9394090), (4, 4697045), (5, 3757636), (10, 1878818), (20, 939409), (137, 137140), (274, 68570), (548, 34285), (685, 27428), (1370, 13714), (2740, 6857)]