318206440

素因数分解:

$2^3\times 5^1\times {\mathrm{509}}^1\times {\mathrm{15629}}^1$

素因数の和:16149

約数の個数: 32

約数和(自身を含む): 717417000

約数和(自身を除く): 399210560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 509, 1018, 2036, 2545, 4072, 5090, 10180, 15629, 20360, 31258, 62516, 78145, 125032, 156290, 312580, 625160, 7955161, 15910322, 31820644, 39775805, 63641288, 79551610, 159103220, 318206440]

約数ペア:

[(1, 318206440), (2, 159103220), (4, 79551610), (5, 63641288), (8, 39775805), (10, 31820644), (20, 15910322), (40, 7955161), (509, 625160), (1018, 312580), (2036, 156290), (2545, 125032), (4072, 78145), (5090, 62516), (10180, 31258), (15629, 20360)]