40018864

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{131641}}^1$

素因数の和:131668

約数の個数: 20

約数和(自身を含む): 81618040

約数和(自身を除く): 41599176

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 131641, 263282, 526564, 1053128, 2106256, 2501179, 5002358, 10004716, 20009432, 40018864]

約数ペア:

[(1, 40018864), (2, 20009432), (4, 10004716), (8, 5002358), (16, 2501179), (19, 2106256), (38, 1053128), (76, 526564), (152, 263282), (304, 131641)]