21685707

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{4373}}^1$

素因数の和:4427

約数の個数: 24

約数和(自身を含む): 34117200

約数和(自身を除く): 12431493

約数列:

[1, 3, 9, 19, 29, 57, 87, 171, 261, 551, 1653, 4373, 4959, 13119, 39357, 83087, 126817, 249261, 380451, 747783, 1141353, 2409523, 7228569, 21685707]

約数ペア:

[(1, 21685707), (3, 7228569), (9, 2409523), (19, 1141353), (29, 747783), (57, 380451), (87, 249261), (171, 126817), (261, 83087), (551, 39357), (1653, 13119), (4373, 4959)]