21357896

素因数分解:

$2^3\times 7^1\times {\mathrm{109}}^1\times {\mathrm{3499}}^1$

素因数の和:3621

約数の個数: 32

約数和(自身を含む): 46200000

約数和(自身を除く): 24842104

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 109, 218, 436, 763, 872, 1526, 3052, 3499, 6104, 6998, 13996, 24493, 27992, 48986, 97972, 195944, 381391, 762782, 1525564, 2669737, 3051128, 5339474, 10678948, 21357896]

約数ペア:

[(1, 21357896), (2, 10678948), (4, 5339474), (7, 3051128), (8, 2669737), (14, 1525564), (28, 762782), (56, 381391), (109, 195944), (218, 97972), (436, 48986), (763, 27992), (872, 24493), (1526, 13996), (3052, 6998), (3499, 6104)]