21331947

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{78139}}^1$

素因数の和:78162

約数の個数: 16

約数和(自身を含む): 35006720

約数和(自身を除く): 13674773

約数列:

[1, 3, 7, 13, 21, 39, 91, 273, 78139, 234417, 546973, 1015807, 1640919, 3047421, 7110649, 21331947]

約数ペア:

[(1, 21331947), (3, 7110649), (7, 3047421), (13, 1640919), (21, 1015807), (39, 546973), (91, 234417), (273, 78139)]