19863873

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{12907}}^1$

素因数の和:12938

約数の個数: 20

約数和(自身を含む): 31237360

約数和(自身を除く): 11373487

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 513, 1539, 12907, 38721, 116163, 245233, 348489, 735699, 1045467, 2207097, 6621291, 19863873]

約数ペア:

[(1, 19863873), (3, 6621291), (9, 2207097), (19, 1045467), (27, 735699), (57, 348489), (81, 245233), (171, 116163), (513, 38721), (1539, 12907)]