21234969

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{131}}^1$

素因数の和:258

約数の個数: 48

約数和(自身を含む): 36900864

約数和(自身を除く): 15665895

約数列:

[1, 3, 7, 9, 21, 31, 63, 83, 93, 131, 217, 249, 279, 393, 581, 651, 747, 917, 1179, 1743, 1953, 2573, 2751, 4061, 5229, 7719, 8253, 10873, 12183, 18011, 23157, 28427, 32619, 36549, 54033, 76111, 85281, 97857, 162099, 228333, 255843, 337063, 684999, 1011189, 2359441, 3033567, 7078323, 21234969]

約数ペア:

[(1, 21234969), (3, 7078323), (7, 3033567), (9, 2359441), (21, 1011189), (31, 684999), (63, 337063), (83, 255843), (93, 228333), (131, 162099), (217, 97857), (249, 85281), (279, 76111), (393, 54033), (581, 36549), (651, 32619), (747, 28427), (917, 23157), (1179, 18011), (1743, 12183), (1953, 10873), (2573, 8253), (2751, 7719), (4061, 5229)]