18740780

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{19937}}^1$

素因数の和:19993

約数の個数: 24

約数和(自身を含む): 40195008

約数和(自身を除く): 21454228

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940, 19937, 39874, 79748, 99685, 199370, 398740, 937039, 1874078, 3748156, 4685195, 9370390, 18740780]

約数ペア:

[(1, 18740780), (2, 9370390), (4, 4685195), (5, 3748156), (10, 1874078), (20, 937039), (47, 398740), (94, 199370), (188, 99685), (235, 79748), (470, 39874), (940, 19937)]