11815640

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{3319}}^1$

素因数の和:3419

約数の個数: 32

約数和(自身を含む): 26892000

約数和(自身を除く): 15076360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3319, 3560, 6638, 13276, 16595, 26552, 33190, 66380, 132760, 295391, 590782, 1181564, 1476955, 2363128, 2953910, 5907820, 11815640]

約数ペア:

[(1, 11815640), (2, 5907820), (4, 2953910), (5, 2363128), (8, 1476955), (10, 1181564), (20, 590782), (40, 295391), (89, 132760), (178, 66380), (356, 33190), (445, 26552), (712, 16595), (890, 13276), (1780, 6638), (3319, 3560)]