18902840

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{42961}}^1$

素因数の和:42983

約数の個数: 32

約数和(自身を含む): 46398960

約数和(自身を除く): 27496120

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 42961, 85922, 171844, 214805, 343688, 429610, 472571, 859220, 945142, 1718440, 1890284, 2362855, 3780568, 4725710, 9451420, 18902840]

約数ペア:

[(1, 18902840), (2, 9451420), (4, 4725710), (5, 3780568), (8, 2362855), (10, 1890284), (11, 1718440), (20, 945142), (22, 859220), (40, 472571), (44, 429610), (55, 343688), (88, 214805), (110, 171844), (220, 85922), (440, 42961)]