18795220

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{22921}}^1$

素因数の和:22971

約数の個数: 24

約数和(自身を含む): 40434408

約数和(自身を除く): 21639188

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 22921, 45842, 91684, 114605, 229210, 458420, 939761, 1879522, 3759044, 4698805, 9397610, 18795220]

約数ペア:

[(1, 18795220), (2, 9397610), (4, 4698805), (5, 3759044), (10, 1879522), (20, 939761), (41, 458420), (82, 229210), (164, 114605), (205, 91684), (410, 45842), (820, 22921)]