18684188

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{4723}}^1$

素因数の和:4793

約数の個数: 24

約数和(自身を含む): 34919808

約数和(自身を除く): 16235620

約数列:

[1, 2, 4, 23, 43, 46, 86, 92, 172, 989, 1978, 3956, 4723, 9446, 18892, 108629, 203089, 217258, 406178, 434516, 812356, 4671047, 9342094, 18684188]

約数ペア:

[(1, 18684188), (2, 9342094), (4, 4671047), (23, 812356), (43, 434516), (46, 406178), (86, 217258), (92, 203089), (172, 108629), (989, 18892), (1978, 9446), (3956, 4723)]