128882480

素因数分解:

$2^4\times 5^1\times {\mathrm{1611031}}^1$

素因数の和:1611044

約数の個数: 20

約数和(自身を含む): 299651952

約数和(自身を除く): 170769472

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1611031, 3222062, 6444124, 8055155, 12888248, 16110310, 25776496, 32220620, 64441240, 128882480]

約数ペア:

[(1, 128882480), (2, 64441240), (4, 32220620), (5, 25776496), (8, 16110310), (10, 12888248), (16, 8055155), (20, 6444124), (40, 3222062), (80, 1611031)]