21379443

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{383}}^1\times {\mathrm{809}}^1$

素因数の和:1218

約数の個数: 16

約数和(自身を含む): 29859840

約数和(自身を除く): 8480397

約数列:

[1, 3, 23, 69, 383, 809, 1149, 2427, 8809, 18607, 26427, 55821, 309847, 929541, 7126481, 21379443]

約数ペア:

[(1, 21379443), (3, 7126481), (23, 929541), (69, 309847), (383, 55821), (809, 26427), (1149, 18607), (2427, 8809)]