61881440

素因数分解:

$2^5\times 5^1\times {\mathrm{439}}^1\times {\mathrm{881}}^1$

素因数の和:1335

約数の個数: 48

約数和(自身を含む): 146694240

約数和(自身を除く): 84812800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 439, 878, 881, 1756, 1762, 2195, 3512, 3524, 4390, 4405, 7024, 7048, 8780, 8810, 14048, 14096, 17560, 17620, 28192, 35120, 35240, 70240, 70480, 140960, 386759, 773518, 1547036, 1933795, 3094072, 3867590, 6188144, 7735180, 12376288, 15470360, 30940720, 61881440]

約数ペア:

[(1, 61881440), (2, 30940720), (4, 15470360), (5, 12376288), (8, 7735180), (10, 6188144), (16, 3867590), (20, 3094072), (32, 1933795), (40, 1547036), (80, 773518), (160, 386759), (439, 140960), (878, 70480), (881, 70240), (1756, 35240), (1762, 35120), (2195, 28192), (3512, 17620), (3524, 17560), (4390, 14096), (4405, 14048), (7024, 8810), (7048, 8780)]