21809280

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{307}}^1$

素因数の和:366

約数の個数: 128

約数和(自身を含む): 71628480

約数和(自身を除く): 49819200

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 37, 40, 48, 60, 64, 74, 80, 96, 111, 120, 128, 148, 160, 185, 192, 222, 240, 296, 307, 320, 370, 384, 444, 480, 555, 592, 614, 640, 740, 888, 921, 960, 1110, 1184, 1228, 1480, 1535, 1776, 1842, 1920, 2220, 2368, 2456, 2960, 3070, 3552, 3684, 4440, 4605, 4736, 4912, 5920, 6140, 7104, 7368, 8880, 9210, 9824, 11359, 11840, 12280, 14208, 14736, 17760, 18420, 19648, 22718, 23680, 24560, 29472, 34077, 35520, 36840, 39296, 45436, 49120, 56795, 58944, 68154, 71040, 73680, 90872, 98240, 113590, 117888, 136308, 147360, 170385, 181744, 196480, 227180, 272616, 294720, 340770, 363488, 454360, 545232, 589440, 681540, 726976, 908720, 1090464, 1363080, 1453952, 1817440, 2180928, 2726160, 3634880, 4361856, 5452320, 7269760, 10904640, 21809280]

約数ペア:

[(1, 21809280), (2, 10904640), (3, 7269760), (4, 5452320), (5, 4361856), (6, 3634880), (8, 2726160), (10, 2180928), (12, 1817440), (15, 1453952), (16, 1363080), (20, 1090464), (24, 908720), (30, 726976), (32, 681540), (37, 589440), (40, 545232), (48, 454360), (60, 363488), (64, 340770), (74, 294720), (80, 272616), (96, 227180), (111, 196480), (120, 181744), (128, 170385), (148, 147360), (160, 136308), (185, 117888), (192, 113590), (222, 98240), (240, 90872), (296, 73680), (307, 71040), (320, 68154), (370, 58944), (384, 56795), (444, 49120), (480, 45436), (555, 39296), (592, 36840), (614, 35520), (640, 34077), (740, 29472), (888, 24560), (921, 23680), (960, 22718), (1110, 19648), (1184, 18420), (1228, 17760), (1480, 14736), (1535, 14208), (1776, 12280), (1842, 11840), (1920, 11359), (2220, 9824), (2368, 9210), (2456, 8880), (2960, 7368), (3070, 7104), (3552, 6140), (3684, 5920), (4440, 4912), (4605, 4736)]