18901640

素因数分解:

$2^3\times 5^1\times {\mathrm{472541}}^1$

素因数の和:472552

約数の個数: 16

約数和(自身を含む): 42528780

約数和(自身を除く): 23627140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 472541, 945082, 1890164, 2362705, 3780328, 4725410, 9450820, 18901640]

約数ペア:

[(1, 18901640), (2, 9450820), (4, 4725410), (5, 3780328), (8, 2362705), (10, 1890164), (20, 945082), (40, 472541)]