18972880

素因数分解:

$2^4\times 5^1\times {\mathrm{237161}}^1$

素因数の和:237174

約数の個数: 20

約数和(自身を含む): 44112132

約数和(自身を除く): 25139252

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 237161, 474322, 948644, 1185805, 1897288, 2371610, 3794576, 4743220, 9486440, 18972880]

約数ペア:

[(1, 18972880), (2, 9486440), (4, 4743220), (5, 3794576), (8, 2371610), (10, 1897288), (16, 1185805), (20, 948644), (40, 474322), (80, 237161)]