21214995

素因数分解:

$3^1\times 5^1\times {\mathrm{211}}^1\times {\mathrm{6703}}^1$

素因数の和:6922

約数の個数: 16

約数和(自身を含む): 34109952

約数和(自身を除く): 12894957

約数列:

[1, 3, 5, 15, 211, 633, 1055, 3165, 6703, 20109, 33515, 100545, 1414333, 4242999, 7071665, 21214995]

約数ペア:

[(1, 21214995), (3, 7071665), (5, 4242999), (15, 1414333), (211, 100545), (633, 33515), (1055, 20109), (3165, 6703)]