865137080

素因数分解:

$2^3\times 5^1\times {\mathrm{21628427}}^1$

素因数の和:21628438

約数の個数: 16

約数和(自身を含む): 1946558520

約数和(自身を除く): 1081421440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 21628427, 43256854, 86513708, 108142135, 173027416, 216284270, 432568540, 865137080]

約数ペア:

[(1, 865137080), (2, 432568540), (4, 216284270), (5, 173027416), (8, 108142135), (10, 86513708), (20, 43256854), (40, 21628427)]