28328240

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{18637}}^1$

素因数の和:18669

約数の個数: 40

約数和(自身を含む): 69333360

約数和(自身を除く): 41005120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 18637, 37274, 74548, 93185, 149096, 186370, 298192, 354103, 372740, 708206, 745480, 1416412, 1490960, 1770515, 2832824, 3541030, 5665648, 7082060, 14164120, 28328240]

約数ペア:

[(1, 28328240), (2, 14164120), (4, 7082060), (5, 5665648), (8, 3541030), (10, 2832824), (16, 1770515), (19, 1490960), (20, 1416412), (38, 745480), (40, 708206), (76, 372740), (80, 354103), (95, 298192), (152, 186370), (190, 149096), (304, 93185), (380, 74548), (760, 37274), (1520, 18637)]