16939640

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{719}}^1$

素因数の和:780

約数の個数: 64

約数和(自身を含む): 41472000

約数和(自身を除く): 24532360

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 31, 38, 40, 62, 76, 95, 124, 152, 155, 190, 248, 310, 380, 589, 620, 719, 760, 1178, 1240, 1438, 2356, 2876, 2945, 3595, 4712, 5752, 5890, 7190, 11780, 13661, 14380, 22289, 23560, 27322, 28760, 44578, 54644, 68305, 89156, 109288, 111445, 136610, 178312, 222890, 273220, 423491, 445780, 546440, 846982, 891560, 1693964, 2117455, 3387928, 4234910, 8469820, 16939640]

約数ペア:

[(1, 16939640), (2, 8469820), (4, 4234910), (5, 3387928), (8, 2117455), (10, 1693964), (19, 891560), (20, 846982), (31, 546440), (38, 445780), (40, 423491), (62, 273220), (76, 222890), (95, 178312), (124, 136610), (152, 111445), (155, 109288), (190, 89156), (248, 68305), (310, 54644), (380, 44578), (589, 28760), (620, 27322), (719, 23560), (760, 22289), (1178, 14380), (1240, 13661), (1438, 11780), (2356, 7190), (2876, 5890), (2945, 5752), (3595, 4712)]