21097947

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{347}}^1\times {\mathrm{1559}}^1$

素因数の和:1922

約数の個数: 16

約数和(自身を含む): 30401280

約数和(自身を除く): 9303333

約数列:

[1, 3, 13, 39, 347, 1041, 1559, 4511, 4677, 13533, 20267, 60801, 540973, 1622919, 7032649, 21097947]

約数ペア:

[(1, 21097947), (3, 7032649), (13, 1622919), (39, 540973), (347, 60801), (1041, 20267), (1559, 13533), (4511, 4677)]