78881240

素因数分解:

$2^3\times 5^1\times {\mathrm{1972031}}^1$

素因数の和:1972042

約数の個数: 16

約数和(自身を含む): 177482880

約数和(自身を除く): 98601640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1972031, 3944062, 7888124, 9860155, 15776248, 19720310, 39440620, 78881240]

約数ペア:

[(1, 78881240), (2, 39440620), (4, 19720310), (5, 15776248), (8, 9860155), (10, 7888124), (20, 3944062), (40, 1972031)]