18998960

素因数分解:

$2^4\times 5^1\times {\mathrm{237487}}^1$

素因数の和:237500

約数の個数: 20

約数和(自身を含む): 44172768

約数和(自身を除く): 25173808

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 237487, 474974, 949948, 1187435, 1899896, 2374870, 3799792, 4749740, 9499480, 18998960]

約数ペア:

[(1, 18998960), (2, 9499480), (4, 4749740), (5, 3799792), (8, 2374870), (10, 1899896), (16, 1187435), (20, 949948), (40, 474974), (80, 237487)]