19725771

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{107}}^1\times {\mathrm{163}}^1$

素因数の和:315

約数の個数: 32

約数和(自身を含む): 29756160

約数和(自身を除く): 10030389

約数列:

[1, 3, 13, 29, 39, 87, 107, 163, 321, 377, 489, 1131, 1391, 2119, 3103, 4173, 4727, 6357, 9309, 14181, 17441, 40339, 52323, 61451, 121017, 184353, 226733, 505789, 680199, 1517367, 6575257, 19725771]

約数ペア:

[(1, 19725771), (3, 6575257), (13, 1517367), (29, 680199), (39, 505789), (87, 226733), (107, 184353), (163, 121017), (321, 61451), (377, 52323), (489, 40339), (1131, 17441), (1391, 14181), (2119, 9309), (3103, 6357), (4173, 4727)]