78740420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^3$

素因数の和:233

約数の個数: 48

約数和(自身を含む): 182964096

約数和(自身を除く): 104223676

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 71, 110, 142, 220, 284, 355, 710, 781, 1420, 1562, 3124, 3905, 5041, 7810, 10082, 15620, 20164, 25205, 50410, 55451, 100820, 110902, 221804, 277255, 357911, 554510, 715822, 1109020, 1431644, 1789555, 3579110, 3937021, 7158220, 7874042, 15748084, 19685105, 39370210, 78740420]

約数ペア:

[(1, 78740420), (2, 39370210), (4, 19685105), (5, 15748084), (10, 7874042), (11, 7158220), (20, 3937021), (22, 3579110), (44, 1789555), (55, 1431644), (71, 1109020), (110, 715822), (142, 554510), (220, 357911), (284, 277255), (355, 221804), (710, 110902), (781, 100820), (1420, 55451), (1562, 50410), (3124, 25205), (3905, 20164), (5041, 15620), (7810, 10082)]