18989720

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{20641}}^1$

素因数の和:20675

約数の個数: 32

約数和(自身を含む): 44586720

約数和(自身を除く): 25597000

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460, 920, 20641, 41282, 82564, 103205, 165128, 206410, 412820, 474743, 825640, 949486, 1898972, 2373715, 3797944, 4747430, 9494860, 18989720]

約数ペア:

[(1, 18989720), (2, 9494860), (4, 4747430), (5, 3797944), (8, 2373715), (10, 1898972), (20, 949486), (23, 825640), (40, 474743), (46, 412820), (92, 206410), (115, 165128), (184, 103205), (230, 82564), (460, 41282), (920, 20641)]