20978660

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{55207}}^1$

素因数の和:55235

約数の個数: 24

約数和(自身を含む): 46374720

約数和(自身を除く): 25396060

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 55207, 110414, 220828, 276035, 552070, 1048933, 1104140, 2097866, 4195732, 5244665, 10489330, 20978660]

約数ペア:

[(1, 20978660), (2, 10489330), (4, 5244665), (5, 4195732), (10, 2097866), (19, 1104140), (20, 1048933), (38, 552070), (76, 276035), (95, 220828), (190, 110414), (380, 55207)]