21310443

素因数分解:

$3^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{191}}^1$

素因数の和:245

約数の個数: 72

約数和(自身を含む): 40974336

約数和(自身を除く): 19663893

約数列:

[1, 3, 7, 9, 11, 21, 23, 33, 49, 63, 69, 77, 99, 147, 161, 191, 207, 231, 253, 441, 483, 539, 573, 693, 759, 1127, 1337, 1449, 1617, 1719, 1771, 2101, 2277, 3381, 4011, 4393, 4851, 5313, 6303, 9359, 10143, 12033, 12397, 13179, 14707, 15939, 18909, 28077, 30751, 37191, 39537, 44121, 48323, 84231, 92253, 102949, 111573, 132363, 144969, 215257, 276759, 308847, 338261, 434907, 645771, 926541, 1014783, 1937313, 2367827, 3044349, 7103481, 21310443]

約数ペア:

[(1, 21310443), (3, 7103481), (7, 3044349), (9, 2367827), (11, 1937313), (21, 1014783), (23, 926541), (33, 645771), (49, 434907), (63, 338261), (69, 308847), (77, 276759), (99, 215257), (147, 144969), (161, 132363), (191, 111573), (207, 102949), (231, 92253), (253, 84231), (441, 48323), (483, 44121), (539, 39537), (573, 37191), (693, 30751), (759, 28077), (1127, 18909), (1337, 15939), (1449, 14707), (1617, 13179), (1719, 12397), (1771, 12033), (2101, 10143), (2277, 9359), (3381, 6303), (4011, 5313), (4393, 4851)]