66761440

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{21961}}^1$

素因数の和:21995

約数の個数: 48

約数和(自身を含む): 166032720

約数和(自身を除く): 99271280

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 76, 80, 95, 152, 160, 190, 304, 380, 608, 760, 1520, 3040, 21961, 43922, 87844, 109805, 175688, 219610, 351376, 417259, 439220, 702752, 834518, 878440, 1669036, 1756880, 2086295, 3338072, 3513760, 4172590, 6676144, 8345180, 13352288, 16690360, 33380720, 66761440]

約数ペア:

[(1, 66761440), (2, 33380720), (4, 16690360), (5, 13352288), (8, 8345180), (10, 6676144), (16, 4172590), (19, 3513760), (20, 3338072), (32, 2086295), (38, 1756880), (40, 1669036), (76, 878440), (80, 834518), (95, 702752), (152, 439220), (160, 417259), (190, 351376), (304, 219610), (380, 175688), (608, 109805), (760, 87844), (1520, 43922), (3040, 21961)]