21297207

素因数分解:

$3^1\times {\mathrm{103}}^1\times {\mathrm{157}}^1\times {\mathrm{439}}^1$

素因数の和:702

約数の個数: 16

約数和(自身を含む): 28920320

約数和(自身を除く): 7623113

約数列:

[1, 3, 103, 157, 309, 439, 471, 1317, 16171, 45217, 48513, 68923, 135651, 206769, 7099069, 21297207]

約数ペア:

[(1, 21297207), (3, 7099069), (103, 206769), (157, 135651), (309, 68923), (439, 48513), (471, 45217), (1317, 16171)]