18859720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{42863}}^1$

素因数の和:42885

約数の個数: 32

約数和(自身を含む): 46293120

約数和(自身を除く): 27433400

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 42863, 85726, 171452, 214315, 342904, 428630, 471493, 857260, 942986, 1714520, 1885972, 2357465, 3771944, 4714930, 9429860, 18859720]

約数ペア:

[(1, 18859720), (2, 9429860), (4, 4714930), (5, 3771944), (8, 2357465), (10, 1885972), (11, 1714520), (20, 942986), (22, 857260), (40, 471493), (44, 428630), (55, 342904), (88, 214315), (110, 171452), (220, 85726), (440, 42863)]