21809040

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{751}}^1$

素因数の和:789

約数の個数: 120

約数和(自身を含む): 74411904

約数和(自身を除く): 52602864

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 33, 40, 44, 48, 55, 60, 66, 80, 88, 110, 120, 121, 132, 165, 176, 220, 240, 242, 264, 330, 363, 440, 484, 528, 605, 660, 726, 751, 880, 968, 1210, 1320, 1452, 1502, 1815, 1936, 2253, 2420, 2640, 2904, 3004, 3630, 3755, 4506, 4840, 5808, 6008, 7260, 7510, 8261, 9012, 9680, 11265, 12016, 14520, 15020, 16522, 18024, 22530, 24783, 29040, 30040, 33044, 36048, 41305, 45060, 49566, 60080, 66088, 82610, 90120, 90871, 99132, 123915, 132176, 165220, 180240, 181742, 198264, 247830, 272613, 330440, 363484, 396528, 454355, 495660, 545226, 660880, 726968, 908710, 991320, 1090452, 1363065, 1453936, 1817420, 1982640, 2180904, 2726130, 3634840, 4361808, 5452260, 7269680, 10904520, 21809040]

約数ペア:

[(1, 21809040), (2, 10904520), (3, 7269680), (4, 5452260), (5, 4361808), (6, 3634840), (8, 2726130), (10, 2180904), (11, 1982640), (12, 1817420), (15, 1453936), (16, 1363065), (20, 1090452), (22, 991320), (24, 908710), (30, 726968), (33, 660880), (40, 545226), (44, 495660), (48, 454355), (55, 396528), (60, 363484), (66, 330440), (80, 272613), (88, 247830), (110, 198264), (120, 181742), (121, 180240), (132, 165220), (165, 132176), (176, 123915), (220, 99132), (240, 90871), (242, 90120), (264, 82610), (330, 66088), (363, 60080), (440, 49566), (484, 45060), (528, 41305), (605, 36048), (660, 33044), (726, 30040), (751, 29040), (880, 24783), (968, 22530), (1210, 18024), (1320, 16522), (1452, 15020), (1502, 14520), (1815, 12016), (1936, 11265), (2253, 9680), (2420, 9012), (2640, 8261), (2904, 7510), (3004, 7260), (3630, 6008), (3755, 5808), (4506, 4840)]