21347313

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{17657}}^1$

素因数の和:17704

約数の個数: 16

約数和(自身を含む): 31643136

約数和(自身を除く): 10295823

約数列:

[1, 3, 13, 31, 39, 93, 403, 1209, 17657, 52971, 229541, 547367, 688623, 1642101, 7115771, 21347313]

約数ペア:

[(1, 21347313), (3, 7115771), (13, 1642101), (31, 688623), (39, 547367), (93, 229541), (403, 52971), (1209, 17657)]