19939899

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{23159}}^1$

素因数の和:23210

約数の個数: 16

約数和(自身を含む): 31127040

約数和(自身を除く): 11187141

約数列:

[1, 3, 7, 21, 41, 123, 287, 861, 23159, 69477, 162113, 486339, 949519, 2848557, 6646633, 19939899]

約数ペア:

[(1, 19939899), (3, 6646633), (7, 2848557), (21, 949519), (41, 486339), (123, 162113), (287, 69477), (861, 23159)]