21279267

素因数分解:

$3^5\times {\mathrm{67}}^1\times {\mathrm{1307}}^1$

素因数の和:1389

約数の個数: 24

約数和(自身を含む): 32375616

約数和(自身を除く): 11096349

約数列:

[1, 3, 9, 27, 67, 81, 201, 243, 603, 1307, 1809, 3921, 5427, 11763, 16281, 35289, 87569, 105867, 262707, 317601, 788121, 2364363, 7093089, 21279267]

約数ペア:

[(1, 21279267), (3, 7093089), (9, 2364363), (27, 788121), (67, 317601), (81, 262707), (201, 105867), (243, 87569), (603, 35289), (1307, 16281), (1809, 11763), (3921, 5427)]