138902480

素因数分解:

$2^4\times 5^1\times {\mathrm{1736281}}^1$

素因数の和:1736294

約数の個数: 20

約数和(自身を含む): 322948452

約数和(自身を除く): 184045972

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1736281, 3472562, 6945124, 8681405, 13890248, 17362810, 27780496, 34725620, 69451240, 138902480]

約数ペア:

[(1, 138902480), (2, 69451240), (4, 34725620), (5, 27780496), (8, 17362810), (10, 13890248), (16, 8681405), (20, 6945124), (40, 3472562), (80, 1736281)]