217267029

素因数分解:

$3^5\times 7^2\times {\mathrm{71}}^1\times {\mathrm{257}}^1$

素因数の和:357

約数の個数: 72

約数和(自身を含む): 385414848

約数和(自身を除く): 168147819

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 71, 81, 147, 189, 213, 243, 257, 441, 497, 567, 639, 771, 1323, 1491, 1701, 1799, 1917, 2313, 3479, 3969, 4473, 5397, 5751, 6939, 10437, 11907, 12593, 13419, 16191, 17253, 18247, 20817, 31311, 37779, 40257, 48573, 54741, 62451, 93933, 113337, 120771, 127729, 145719, 164223, 281799, 340011, 383187, 437157, 492669, 845397, 894103, 1020033, 1149561, 1478007, 2682309, 3060099, 3448683, 4434021, 8046927, 10346049, 24140781, 31038147, 72422343, 217267029]

約数ペア:

[(1, 217267029), (3, 72422343), (7, 31038147), (9, 24140781), (21, 10346049), (27, 8046927), (49, 4434021), (63, 3448683), (71, 3060099), (81, 2682309), (147, 1478007), (189, 1149561), (213, 1020033), (243, 894103), (257, 845397), (441, 492669), (497, 437157), (567, 383187), (639, 340011), (771, 281799), (1323, 164223), (1491, 145719), (1701, 127729), (1799, 120771), (1917, 113337), (2313, 93933), (3479, 62451), (3969, 54741), (4473, 48573), (5397, 40257), (5751, 37779), (6939, 31311), (10437, 20817), (11907, 18247), (12593, 17253), (13419, 16191)]