21555840

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{103}}^1\times {\mathrm{109}}^1$

素因数の和:234

約数の個数: 128

約数和(自身を含む): 70012800

約数和(自身を除く): 48456960

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 103, 109, 120, 128, 160, 192, 206, 218, 240, 309, 320, 327, 384, 412, 436, 480, 515, 545, 618, 640, 654, 824, 872, 960, 1030, 1090, 1236, 1308, 1545, 1635, 1648, 1744, 1920, 2060, 2180, 2472, 2616, 3090, 3270, 3296, 3488, 4120, 4360, 4944, 5232, 6180, 6540, 6592, 6976, 8240, 8720, 9888, 10464, 11227, 12360, 13080, 13184, 13952, 16480, 17440, 19776, 20928, 22454, 24720, 26160, 32960, 33681, 34880, 39552, 41856, 44908, 49440, 52320, 56135, 65920, 67362, 69760, 89816, 98880, 104640, 112270, 134724, 168405, 179632, 197760, 209280, 224540, 269448, 336810, 359264, 449080, 538896, 673620, 718528, 898160, 1077792, 1347240, 1437056, 1796320, 2155584, 2694480, 3592640, 4311168, 5388960, 7185280, 10777920, 21555840]

約数ペア:

[(1, 21555840), (2, 10777920), (3, 7185280), (4, 5388960), (5, 4311168), (6, 3592640), (8, 2694480), (10, 2155584), (12, 1796320), (15, 1437056), (16, 1347240), (20, 1077792), (24, 898160), (30, 718528), (32, 673620), (40, 538896), (48, 449080), (60, 359264), (64, 336810), (80, 269448), (96, 224540), (103, 209280), (109, 197760), (120, 179632), (128, 168405), (160, 134724), (192, 112270), (206, 104640), (218, 98880), (240, 89816), (309, 69760), (320, 67362), (327, 65920), (384, 56135), (412, 52320), (436, 49440), (480, 44908), (515, 41856), (545, 39552), (618, 34880), (640, 33681), (654, 32960), (824, 26160), (872, 24720), (960, 22454), (1030, 20928), (1090, 19776), (1236, 17440), (1308, 16480), (1545, 13952), (1635, 13184), (1648, 13080), (1744, 12360), (1920, 11227), (2060, 10464), (2180, 9888), (2472, 8720), (2616, 8240), (3090, 6976), (3270, 6592), (3296, 6540), (3488, 6180), (4120, 5232), (4360, 4944)]