208020640

素因数分解:

$2^5\times 5^1\times {\mathrm{1300129}}^1$

素因数の和:1300144

約数の個数: 24

約数和(自身を含む): 491449140

約数和(自身を除く): 283428500

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 1300129, 2600258, 5200516, 6500645, 10401032, 13001290, 20802064, 26002580, 41604128, 52005160, 104010320, 208020640]

約数ペア:

[(1, 208020640), (2, 104010320), (4, 52005160), (5, 41604128), (8, 26002580), (10, 20802064), (16, 13001290), (20, 10401032), (32, 6500645), (40, 5200516), (80, 2600258), (160, 1300129)]