21208670

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{43283}}^1$

素因数の和:43304

約数の個数: 24

約数和(自身を含む): 44409384

約数和(自身を除く): 23200714

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 43283, 86566, 216415, 302981, 432830, 605962, 1514905, 2120867, 3029810, 4241734, 10604335, 21208670]

約数ペア:

[(1, 21208670), (2, 10604335), (5, 4241734), (7, 3029810), (10, 2120867), (14, 1514905), (35, 605962), (49, 432830), (70, 302981), (98, 216415), (245, 86566), (490, 43283)]