138401240

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{84391}}^1$

素因数の和:84443

約数の個数: 32

約数和(自身を含む): 319001760

約数和(自身を除く): 180600520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 84391, 168782, 337564, 421955, 675128, 843910, 1687820, 3375640, 3460031, 6920062, 13840124, 17300155, 27680248, 34600310, 69200620, 138401240]

約数ペア:

[(1, 138401240), (2, 69200620), (4, 34600310), (5, 27680248), (8, 17300155), (10, 13840124), (20, 6920062), (40, 3460031), (41, 3375640), (82, 1687820), (164, 843910), (205, 675128), (328, 421955), (410, 337564), (820, 168782), (1640, 84391)]