18760720

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{21319}}^1$

素因数の和:21343

約数の個数: 40

約数和(自身を含む): 47586240

約数和(自身を除く): 28825520

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 21319, 42638, 85276, 106595, 170552, 213190, 234509, 341104, 426380, 469018, 852760, 938036, 1172545, 1705520, 1876072, 2345090, 3752144, 4690180, 9380360, 18760720]

約数ペア:

[(1, 18760720), (2, 9380360), (4, 4690180), (5, 3752144), (8, 2345090), (10, 1876072), (11, 1705520), (16, 1172545), (20, 938036), (22, 852760), (40, 469018), (44, 426380), (55, 341104), (80, 234509), (88, 213190), (110, 170552), (176, 106595), (220, 85276), (440, 42638), (880, 21319)]