20947920

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{337}}^1$

素因数の和:397

約数の個数: 160

約数和(自身を含む): 76447488

約数和(自身を除く): 55499568

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 37, 40, 42, 48, 56, 60, 70, 74, 80, 84, 105, 111, 112, 120, 140, 148, 168, 185, 210, 222, 240, 259, 280, 296, 336, 337, 370, 420, 444, 518, 555, 560, 592, 674, 740, 777, 840, 888, 1011, 1036, 1110, 1295, 1348, 1480, 1554, 1680, 1685, 1776, 2022, 2072, 2220, 2359, 2590, 2696, 2960, 3108, 3370, 3885, 4044, 4144, 4440, 4718, 5055, 5180, 5392, 6216, 6740, 7077, 7770, 8088, 8880, 9436, 10110, 10360, 11795, 12432, 12469, 13480, 14154, 15540, 16176, 18872, 20220, 20720, 23590, 24938, 26960, 28308, 31080, 35385, 37407, 37744, 40440, 47180, 49876, 56616, 62160, 62345, 70770, 74814, 80880, 87283, 94360, 99752, 113232, 124690, 141540, 149628, 174566, 187035, 188720, 199504, 249380, 261849, 283080, 299256, 349132, 374070, 436415, 498760, 523698, 566160, 598512, 698264, 748140, 872830, 997520, 1047396, 1309245, 1396528, 1496280, 1745660, 2094792, 2618490, 2992560, 3491320, 4189584, 5236980, 6982640, 10473960, 20947920]

約数ペア:

[(1, 20947920), (2, 10473960), (3, 6982640), (4, 5236980), (5, 4189584), (6, 3491320), (7, 2992560), (8, 2618490), (10, 2094792), (12, 1745660), (14, 1496280), (15, 1396528), (16, 1309245), (20, 1047396), (21, 997520), (24, 872830), (28, 748140), (30, 698264), (35, 598512), (37, 566160), (40, 523698), (42, 498760), (48, 436415), (56, 374070), (60, 349132), (70, 299256), (74, 283080), (80, 261849), (84, 249380), (105, 199504), (111, 188720), (112, 187035), (120, 174566), (140, 149628), (148, 141540), (168, 124690), (185, 113232), (210, 99752), (222, 94360), (240, 87283), (259, 80880), (280, 74814), (296, 70770), (336, 62345), (337, 62160), (370, 56616), (420, 49876), (444, 47180), (518, 40440), (555, 37744), (560, 37407), (592, 35385), (674, 31080), (740, 28308), (777, 26960), (840, 24938), (888, 23590), (1011, 20720), (1036, 20220), (1110, 18872), (1295, 16176), (1348, 15540), (1480, 14154), (1554, 13480), (1680, 12469), (1685, 12432), (1776, 11795), (2022, 10360), (2072, 10110), (2220, 9436), (2359, 8880), (2590, 8088), (2696, 7770), (2960, 7077), (3108, 6740), (3370, 6216), (3885, 5392), (4044, 5180), (4144, 5055), (4440, 4718)]