21978317

素因数分解:

${\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{397}}^1$

素因数の和:532

約数の個数: 16

約数和(自身を含む): 24071040

約数和(自身を除く): 2092723

約数列:

[1, 23, 29, 83, 397, 667, 1909, 2407, 9131, 11513, 32951, 55361, 264799, 757873, 955579, 21978317]

約数ペア:

[(1, 21978317), (23, 955579), (29, 757873), (83, 264799), (397, 55361), (667, 32951), (1909, 11513), (2407, 9131)]