20081960

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{5641}}^1$

素因数の和:5741

約数の個数: 32

約数和(自身を含む): 45700200

約数和(自身を除く): 25618240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 5641, 11282, 22564, 28205, 45128, 56410, 112820, 225640, 502049, 1004098, 2008196, 2510245, 4016392, 5020490, 10040980, 20081960]

約数ペア:

[(1, 20081960), (2, 10040980), (4, 5020490), (5, 4016392), (8, 2510245), (10, 2008196), (20, 1004098), (40, 502049), (89, 225640), (178, 112820), (356, 56410), (445, 45128), (712, 28205), (890, 22564), (1780, 11282), (3560, 5641)]