21335223

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{2521}}^1$

素因数の和:2575

約数の個数: 32

約数和(自身を含む): 36155392

約数和(自身を除く): 14820169

約数列:

[1, 3, 7, 13, 21, 31, 39, 91, 93, 217, 273, 403, 651, 1209, 2521, 2821, 7563, 8463, 17647, 32773, 52941, 78151, 98319, 229411, 234453, 547057, 688233, 1015963, 1641171, 3047889, 7111741, 21335223]

約数ペア:

[(1, 21335223), (3, 7111741), (7, 3047889), (13, 1641171), (21, 1015963), (31, 688233), (39, 547057), (91, 234453), (93, 229411), (217, 98319), (273, 78151), (403, 52941), (651, 32773), (1209, 17647), (2521, 8463), (2821, 7563)]