81480520

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{185183}}^1$

素因数の和:185205

約数の個数: 32

約数和(自身を含む): 199998720

約数和(自身を除く): 118518200

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 185183, 370366, 740732, 925915, 1481464, 1851830, 2037013, 3703660, 4074026, 7407320, 8148052, 10185065, 16296104, 20370130, 40740260, 81480520]

約数ペア:

[(1, 81480520), (2, 40740260), (4, 20370130), (5, 16296104), (8, 10185065), (10, 8148052), (11, 7407320), (20, 4074026), (22, 3703660), (40, 2037013), (44, 1851830), (55, 1481464), (88, 925915), (110, 740732), (220, 370366), (440, 185183)]