27988910

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{499}}^1$

素因数の和:656

約数の個数: 32

約数和(自身を含む): 51840000

約数和(自身を除く): 23851090

約数列:

[1, 2, 5, 10, 71, 79, 142, 158, 355, 395, 499, 710, 790, 998, 2495, 4990, 5609, 11218, 28045, 35429, 39421, 56090, 70858, 78842, 177145, 197105, 354290, 394210, 2798891, 5597782, 13994455, 27988910]

約数ペア:

[(1, 27988910), (2, 13994455), (5, 5597782), (10, 2798891), (71, 394210), (79, 354290), (142, 197105), (158, 177145), (355, 78842), (395, 70858), (499, 56090), (710, 39421), (790, 35429), (998, 28045), (2495, 11218), (4990, 5609)]