18421136

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{28081}}^1$

素因数の和:28130

約数の個数: 20

約数和(自身を含む): 36562764

約数和(自身を除く): 18141628

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 28081, 56162, 112324, 224648, 449296, 1151321, 2302642, 4605284, 9210568, 18421136]

約数ペア:

[(1, 18421136), (2, 9210568), (4, 4605284), (8, 2302642), (16, 1151321), (41, 449296), (82, 224648), (164, 112324), (328, 56162), (656, 28081)]