17939978

素因数分解:

$2^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{3001}}^1$

素因数の和:3078

約数の個数: 24

約数和(自身を含む): 31827204

約数和(自身を除く): 13887226

約数列:

[1, 2, 7, 14, 49, 61, 98, 122, 427, 854, 2989, 3001, 5978, 6002, 21007, 42014, 147049, 183061, 294098, 366122, 1281427, 2562854, 8969989, 17939978]

約数ペア:

[(1, 17939978), (2, 8969989), (7, 2562854), (14, 1281427), (49, 366122), (61, 294098), (98, 183061), (122, 147049), (427, 42014), (854, 21007), (2989, 6002), (3001, 5978)]