21075747

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{91237}}^1$

素因数の和:91258

約数の個数: 16

約数和(自身を含む): 35035392

約数和(自身を除く): 13959645

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 91237, 273711, 638659, 1003607, 1915977, 3010821, 7025249, 21075747]

約数ペア:

[(1, 21075747), (3, 7025249), (7, 3010821), (11, 1915977), (21, 1003607), (33, 638659), (77, 273711), (231, 91237)]