20796219

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1$

素因数の和:204

約数の個数: 48

約数和(自身を含む): 33976800

約数和(自身を除く): 13180581

約数列:

[1, 3, 9, 17, 29, 43, 51, 87, 109, 129, 153, 261, 327, 387, 493, 731, 981, 1247, 1479, 1853, 2193, 3161, 3741, 4437, 4687, 5559, 6579, 9483, 11223, 14061, 16677, 21199, 28449, 42183, 53737, 63597, 79679, 135923, 161211, 190791, 239037, 407769, 483633, 717111, 1223307, 2310691, 6932073, 20796219]

約数ペア:

[(1, 20796219), (3, 6932073), (9, 2310691), (17, 1223307), (29, 717111), (43, 483633), (51, 407769), (87, 239037), (109, 190791), (129, 161211), (153, 135923), (261, 79679), (327, 63597), (387, 53737), (493, 42183), (731, 28449), (981, 21199), (1247, 16677), (1479, 14061), (1853, 11223), (2193, 9483), (3161, 6579), (3741, 5559), (4437, 4687)]