18043880

素因数分解:

$2^3\times 5^1\times {\mathrm{451097}}^1$

素因数の和:451108

約数の個数: 16

約数和(自身を含む): 40598820

約数和(自身を除く): 22554940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 451097, 902194, 1804388, 2255485, 3608776, 4510970, 9021940, 18043880]

約数ペア:

[(1, 18043880), (2, 9021940), (4, 4510970), (5, 3608776), (8, 2255485), (10, 1804388), (20, 902194), (40, 451097)]