21094749

素因数分解:

$3^4\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{67}}^1$

素因数の和:128

約数の個数: 60

約数和(自身を含む): 36137376

約数和(自身を除く): 15042627

約数列:

[1, 3, 9, 13, 23, 27, 39, 67, 69, 81, 117, 169, 201, 207, 299, 351, 507, 603, 621, 871, 897, 1053, 1521, 1541, 1809, 1863, 2613, 2691, 3887, 4563, 4623, 5427, 7839, 8073, 11323, 11661, 13689, 13869, 20033, 23517, 24219, 33969, 34983, 41607, 60099, 70551, 101907, 104949, 124821, 180297, 260429, 305721, 314847, 540891, 781287, 917163, 1622673, 2343861, 7031583, 21094749]

約数ペア:

[(1, 21094749), (3, 7031583), (9, 2343861), (13, 1622673), (23, 917163), (27, 781287), (39, 540891), (67, 314847), (69, 305721), (81, 260429), (117, 180297), (169, 124821), (201, 104949), (207, 101907), (299, 70551), (351, 60099), (507, 41607), (603, 34983), (621, 33969), (871, 24219), (897, 23517), (1053, 20033), (1521, 13869), (1541, 13689), (1809, 11661), (1863, 11323), (2613, 8073), (2691, 7839), (3887, 5427), (4563, 4623)]