18987604

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{179}}^1\times {\mathrm{1153}}^1$

素因数の和:1359

約数の個数: 24

約数和(自身を含む): 34896960

約数和(自身を除く): 15909356

約数列:

[1, 2, 4, 23, 46, 92, 179, 358, 716, 1153, 2306, 4117, 4612, 8234, 16468, 26519, 53038, 106076, 206387, 412774, 825548, 4746901, 9493802, 18987604]

約数ペア:

[(1, 18987604), (2, 9493802), (4, 4746901), (23, 825548), (46, 412774), (92, 206387), (179, 106076), (358, 53038), (716, 26519), (1153, 16468), (2306, 8234), (4117, 4612)]