128881240

素因数分解:

$2^3\times 5^1\times {\mathrm{3222031}}^1$

素因数の和:3222042

約数の個数: 16

約数和(自身を含む): 289982880

約数和(自身を除く): 161101640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 3222031, 6444062, 12888124, 16110155, 25776248, 32220310, 64440620, 128881240]

約数ペア:

[(1, 128881240), (2, 64440620), (4, 32220310), (5, 25776248), (8, 16110155), (10, 12888124), (20, 6444062), (40, 3222031)]