21829870

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{128411}}^1$

素因数の和:128435

約数の個数: 16

約数和(自身を含む): 41605488

約数和(自身を除く): 19775618

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 128411, 256822, 642055, 1284110, 2182987, 4365974, 10914935, 21829870]

約数ペア:

[(1, 21829870), (2, 10914935), (5, 4365974), (10, 2182987), (17, 1284110), (34, 642055), (85, 256822), (170, 128411)]