28995760

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{8429}}^1$

素因数の和:8485

約数の個数: 40

約数和(自身を含む): 68991120

約数和(自身を除く): 39995360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 8429, 16858, 33716, 42145, 67432, 84290, 134864, 168580, 337160, 362447, 674320, 724894, 1449788, 1812235, 2899576, 3624470, 5799152, 7248940, 14497880, 28995760]

約数ペア:

[(1, 28995760), (2, 14497880), (4, 7248940), (5, 5799152), (8, 3624470), (10, 2899576), (16, 1812235), (20, 1449788), (40, 724894), (43, 674320), (80, 362447), (86, 337160), (172, 168580), (215, 134864), (344, 84290), (430, 67432), (688, 42145), (860, 33716), (1720, 16858), (3440, 8429)]