20857340

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{21283}}^1$

素因数の和:21306

約数の個数: 36

約数和(自身を含む): 50953896

約数和(自身を除く): 30096556

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 21283, 42566, 85132, 106415, 148981, 212830, 297962, 425660, 595924, 744905, 1042867, 1489810, 2085734, 2979620, 4171468, 5214335, 10428670, 20857340]

約数ペア:

[(1, 20857340), (2, 10428670), (4, 5214335), (5, 4171468), (7, 2979620), (10, 2085734), (14, 1489810), (20, 1042867), (28, 744905), (35, 595924), (49, 425660), (70, 297962), (98, 212830), (140, 148981), (196, 106415), (245, 85132), (490, 42566), (980, 21283)]