18139640

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{19717}}^1$

素因数の和:19751

約数の個数: 32

約数和(自身を含む): 42590880

約数和(自身を除く): 24451240

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460, 920, 19717, 39434, 78868, 98585, 157736, 197170, 394340, 453491, 788680, 906982, 1813964, 2267455, 3627928, 4534910, 9069820, 18139640]

約数ペア:

[(1, 18139640), (2, 9069820), (4, 4534910), (5, 3627928), (8, 2267455), (10, 1813964), (20, 906982), (23, 788680), (40, 453491), (46, 394340), (92, 197170), (115, 157736), (184, 98585), (230, 78868), (460, 39434), (920, 19717)]