19985630

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{40787}}^1$

素因数の和:40808

約数の個数: 24

約数和(自身を含む): 41848488

約数和(自身を除く): 21862858

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 40787, 81574, 203935, 285509, 407870, 571018, 1427545, 1998563, 2855090, 3997126, 9992815, 19985630]

約数ペア:

[(1, 19985630), (2, 9992815), (5, 3997126), (7, 2855090), (10, 1998563), (14, 1427545), (35, 571018), (49, 407870), (70, 285509), (98, 203935), (245, 81574), (490, 40787)]