18995020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{86341}}^1$

素因数の和:86361

約数の個数: 24

約数和(自身を含む): 43516368

約数和(自身を除く): 24521348

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 86341, 172682, 345364, 431705, 863410, 949751, 1726820, 1899502, 3799004, 4748755, 9497510, 18995020]

約数ペア:

[(1, 18995020), (2, 9497510), (4, 4748755), (5, 3799004), (10, 1899502), (11, 1726820), (20, 949751), (22, 863410), (44, 431705), (55, 345364), (110, 172682), (220, 86341)]