21271440

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{263}}^1\times {\mathrm{337}}^1$

素因数の和:616

約数の個数: 80

約数和(自身を含む): 66388608

約数和(自身を除く): 45117168

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 263, 337, 526, 674, 789, 1011, 1052, 1315, 1348, 1578, 1685, 2022, 2104, 2630, 2696, 3156, 3370, 3945, 4044, 4208, 5055, 5260, 5392, 6312, 6740, 7890, 8088, 10110, 10520, 12624, 13480, 15780, 16176, 20220, 21040, 26960, 31560, 40440, 63120, 80880, 88631, 177262, 265893, 354524, 443155, 531786, 709048, 886310, 1063572, 1329465, 1418096, 1772620, 2127144, 2658930, 3545240, 4254288, 5317860, 7090480, 10635720, 21271440]

約数ペア:

[(1, 21271440), (2, 10635720), (3, 7090480), (4, 5317860), (5, 4254288), (6, 3545240), (8, 2658930), (10, 2127144), (12, 1772620), (15, 1418096), (16, 1329465), (20, 1063572), (24, 886310), (30, 709048), (40, 531786), (48, 443155), (60, 354524), (80, 265893), (120, 177262), (240, 88631), (263, 80880), (337, 63120), (526, 40440), (674, 31560), (789, 26960), (1011, 21040), (1052, 20220), (1315, 16176), (1348, 15780), (1578, 13480), (1685, 12624), (2022, 10520), (2104, 10110), (2630, 8088), (2696, 7890), (3156, 6740), (3370, 6312), (3945, 5392), (4044, 5260), (4208, 5055)]