21149313

素因数分解:

$3^1\times {\mathrm{83}}^1\times {\mathrm{157}}^1\times {\mathrm{541}}^1$

素因数の和:784

約数の個数: 16

約数和(自身を含む): 28773696

約数和(自身を除く): 7624383

約数列:

[1, 3, 83, 157, 249, 471, 541, 1623, 13031, 39093, 44903, 84937, 134709, 254811, 7049771, 21149313]

約数ペア:

[(1, 21149313), (3, 7049771), (83, 254811), (157, 134709), (249, 84937), (471, 44903), (541, 39093), (1623, 13031)]