81380918

素因数分解:

$2^1\times {\mathrm{103}}^1\times {\mathrm{179}}^1\times {\mathrm{2207}}^1$

素因数の和:2491

約数の個数: 16

約数和(自身を含む): 124001280

約数和(自身を除く): 42620362

約数列:

[1, 2, 103, 179, 206, 358, 2207, 4414, 18437, 36874, 227321, 395053, 454642, 790106, 40690459, 81380918]

約数ペア:

[(1, 81380918), (2, 40690459), (103, 790106), (179, 454642), (206, 395053), (358, 227321), (2207, 36874), (4414, 18437)]