1281640

素因数分解:

$2^3\times 5^1\times {\mathrm{179}}^2$

素因数の和:369

約数の個数: 24

約数和(自身を含む): 2899890

約数和(自身を除く): 1618250

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 179, 358, 716, 895, 1432, 1790, 3580, 7160, 32041, 64082, 128164, 160205, 256328, 320410, 640820, 1281640]

約数ペア:

[(1, 1281640), (2, 640820), (4, 320410), (5, 256328), (8, 160205), (10, 128164), (20, 64082), (40, 32041), (179, 7160), (358, 3580), (716, 1790), (895, 1432)]