21206783

素因数分解:

${\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{643}}^1$

素因数の和:758

約数の個数: 16

約数和(自身を含む): 23802240

約数和(自身を除く): 2595457

約数列:

[1, 13, 43, 59, 559, 643, 767, 2537, 8359, 27649, 32981, 37937, 359437, 493181, 1631291, 21206783]

約数ペア:

[(1, 21206783), (13, 1631291), (43, 493181), (59, 359437), (559, 37937), (643, 32981), (767, 27649), (2537, 8359)]