21657753

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{61703}}^1$

素因数の和:61725

約数の個数: 16

約数和(自身を含む): 34554240

約数和(自身を除く): 12896487

約数列:

[1, 3, 9, 13, 27, 39, 117, 351, 61703, 185109, 555327, 802139, 1665981, 2406417, 7219251, 21657753]

約数ペア:

[(1, 21657753), (3, 7219251), (9, 2406417), (13, 1665981), (27, 802139), (39, 555327), (117, 185109), (351, 61703)]