21280281321

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{11609537}}^1$

素因数の和:11609600

約数の個数: 16

約数和(自身を含む): 31206438144

約数和(自身を除く): 9926156823

約数列:

[1, 3, 13, 39, 47, 141, 611, 1833, 11609537, 34828611, 150923981, 452771943, 545648239, 1636944717, 7093427107, 21280281321]

約数ペア:

[(1, 21280281321), (3, 7093427107), (13, 1636944717), (39, 545648239), (47, 452771943), (141, 150923981), (611, 34828611), (1833, 11609537)]