19949697

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{139}}^1\times {\mathrm{431}}^1$

素因数の和:613

約数の個数: 24

約数和(自身を含む): 29877120

約数和(自身を除く): 9927423

約数列:

[1, 3, 9, 37, 111, 139, 333, 417, 431, 1251, 1293, 3879, 5143, 15429, 15947, 46287, 47841, 59909, 143523, 179727, 539181, 2216633, 6649899, 19949697]

約数ペア:

[(1, 19949697), (3, 6649899), (9, 2216633), (37, 539181), (111, 179727), (139, 143523), (333, 59909), (417, 47841), (431, 46287), (1251, 15947), (1293, 15429), (3879, 5143)]