17997998

素因数分解:

$2^1\times {\mathrm{101}}^1\times {\mathrm{139}}^1\times {\mathrm{641}}^1$

素因数の和:883

約数の個数: 16

約数和(自身を含む): 27503280

約数和(自身を除く): 9505282

約数列:

[1, 2, 101, 139, 202, 278, 641, 1282, 14039, 28078, 64741, 89099, 129482, 178198, 8998999, 17997998]

約数ペア:

[(1, 17997998), (2, 8998999), (101, 178198), (139, 129482), (202, 89099), (278, 64741), (641, 28078), (1282, 14039)]