20696517

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{179}}^1\times {\mathrm{443}}^1$

素因数の和:657

約数の個数: 24

約数和(自身を含む): 31168800

約数和(自身を除く): 10472283

約数列:

[1, 3, 9, 29, 87, 179, 261, 443, 537, 1329, 1611, 3987, 5191, 12847, 15573, 38541, 46719, 79297, 115623, 237891, 713673, 2299613, 6898839, 20696517]

約数ペア:

[(1, 20696517), (3, 6898839), (9, 2299613), (29, 713673), (87, 237891), (179, 115623), (261, 79297), (443, 46719), (537, 38541), (1329, 15573), (1611, 12847), (3987, 5191)]