78838040

素因数分解:

$2^3\times 5^1\times {\mathrm{211}}^1\times {\mathrm{9341}}^1$

素因数の和:9563

約数の個数: 32

約数和(自身を含む): 178245360

約数和(自身を除く): 99407320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 211, 422, 844, 1055, 1688, 2110, 4220, 8440, 9341, 18682, 37364, 46705, 74728, 93410, 186820, 373640, 1970951, 3941902, 7883804, 9854755, 15767608, 19709510, 39419020, 78838040]

約数ペア:

[(1, 78838040), (2, 39419020), (4, 19709510), (5, 15767608), (8, 9854755), (10, 7883804), (20, 3941902), (40, 1970951), (211, 373640), (422, 186820), (844, 93410), (1055, 74728), (1688, 46705), (2110, 37364), (4220, 18682), (8440, 9341)]