18905978

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{1423}}^1$

素因数の和:1518

約数の個数: 32

約数和(自身を含む): 35406336

約数和(自身を除く): 16500358

約数列:

[1, 2, 7, 13, 14, 26, 73, 91, 146, 182, 511, 949, 1022, 1423, 1898, 2846, 6643, 9961, 13286, 18499, 19922, 36998, 103879, 129493, 207758, 258986, 727153, 1350427, 1454306, 2700854, 9452989, 18905978]

約数ペア:

[(1, 18905978), (2, 9452989), (7, 2700854), (13, 1454306), (14, 1350427), (26, 727153), (73, 258986), (91, 207758), (146, 129493), (182, 103879), (511, 36998), (949, 19922), (1022, 18499), (1423, 13286), (1898, 9961), (2846, 6643)]