18018194840

素因数分解:

$2^3\times 5^1\times {\mathrm{223}}^1\times {\mathrm{2019977}}^1$

素因数の和:2020211

約数の個数: 32

約数和(自身を含む): 40722756480

約数和(自身を除く): 22704561640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 223, 446, 892, 1115, 1784, 2230, 4460, 8920, 2019977, 4039954, 8079908, 10099885, 16159816, 20199770, 40399540, 80799080, 450454871, 900909742, 1801819484, 2252274355, 3603638968, 4504548710, 9009097420, 18018194840]

約数ペア:

[(1, 18018194840), (2, 9009097420), (4, 4504548710), (5, 3603638968), (8, 2252274355), (10, 1801819484), (20, 900909742), (40, 450454871), (223, 80799080), (446, 40399540), (892, 20199770), (1115, 16159816), (1784, 10099885), (2230, 8079908), (4460, 4039954), (8920, 2019977)]