19809923

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{1733}}^1$

素因数の和:1834

約数の個数: 16

約数和(自身を含む): 23970816

約数和(自身を除く): 4160893

約数列:

[1, 7, 23, 71, 161, 497, 1633, 1733, 11431, 12131, 39859, 123043, 279013, 861301, 2829989, 19809923]

約数ペア:

[(1, 19809923), (7, 2829989), (23, 861301), (71, 279013), (161, 123043), (497, 39859), (1633, 12131), (1733, 11431)]