19913978

素因数分解:

$2^1\times 7^1\times {\mathrm{491}}^1\times {\mathrm{2897}}^1$

素因数の和:3397

約数の個数: 16

約数和(自身を含む): 34219584

約数和(自身を除く): 14305606

約数列:

[1, 2, 7, 14, 491, 982, 2897, 3437, 5794, 6874, 20279, 40558, 1422427, 2844854, 9956989, 19913978]

約数ペア:

[(1, 19913978), (2, 9956989), (7, 2844854), (14, 1422427), (491, 40558), (982, 20279), (2897, 6874), (3437, 5794)]