18537700

素因数分解:

$2^2\times 5^2\times {\mathrm{197}}^1\times {\mathrm{941}}^1$

素因数の和:1152

約数の個数: 36

約数和(自身を含む): 40473972

約数和(自身を除く): 21936272

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 197, 394, 788, 941, 985, 1882, 1970, 3764, 3940, 4705, 4925, 9410, 9850, 18820, 19700, 23525, 47050, 94100, 185377, 370754, 741508, 926885, 1853770, 3707540, 4634425, 9268850, 18537700]

約数ペア:

[(1, 18537700), (2, 9268850), (4, 4634425), (5, 3707540), (10, 1853770), (20, 926885), (25, 741508), (50, 370754), (100, 185377), (197, 94100), (394, 47050), (788, 23525), (941, 19700), (985, 18820), (1882, 9850), (1970, 9410), (3764, 4925), (3940, 4705)]