139901960

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{317959}}^1$

素因数の和:317981

約数の個数: 32

約数和(自身を含む): 343396800

約数和(自身を除く): 203494840

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 317959, 635918, 1271836, 1589795, 2543672, 3179590, 3497549, 6359180, 6995098, 12718360, 13990196, 17487745, 27980392, 34975490, 69950980, 139901960]

約数ペア:

[(1, 139901960), (2, 69950980), (4, 34975490), (5, 27980392), (8, 17487745), (10, 13990196), (11, 12718360), (20, 6995098), (22, 6359180), (40, 3497549), (44, 3179590), (55, 2543672), (88, 1589795), (110, 1271836), (220, 635918), (440, 317959)]