28339280

素因数分解:

$2^4\times 5^1\times {\mathrm{179}}^1\times {\mathrm{1979}}^1$

素因数の和:2171

約数の個数: 40

約数和(自身を含む): 66290400

約数和(自身を除く): 37951120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 179, 358, 716, 895, 1432, 1790, 1979, 2864, 3580, 3958, 7160, 7916, 9895, 14320, 15832, 19790, 31664, 39580, 79160, 158320, 354241, 708482, 1416964, 1771205, 2833928, 3542410, 5667856, 7084820, 14169640, 28339280]

約数ペア:

[(1, 28339280), (2, 14169640), (4, 7084820), (5, 5667856), (8, 3542410), (10, 2833928), (16, 1771205), (20, 1416964), (40, 708482), (80, 354241), (179, 158320), (358, 79160), (716, 39580), (895, 31664), (1432, 19790), (1790, 15832), (1979, 14320), (2864, 9895), (3580, 7916), (3958, 7160)]