21504560

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{3491}}^1$

素因数の和:3522

約数の個数: 80

約数和(自身を含む): 62353152

約数和(自身を除く): 40848592

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 80, 88, 110, 112, 140, 154, 176, 220, 280, 308, 385, 440, 560, 616, 770, 880, 1232, 1540, 3080, 3491, 6160, 6982, 13964, 17455, 24437, 27928, 34910, 38401, 48874, 55856, 69820, 76802, 97748, 122185, 139640, 153604, 192005, 195496, 244370, 268807, 279280, 307208, 384010, 390992, 488740, 537614, 614416, 768020, 977480, 1075228, 1344035, 1536040, 1954960, 2150456, 2688070, 3072080, 4300912, 5376140, 10752280, 21504560]

約数ペア:

[(1, 21504560), (2, 10752280), (4, 5376140), (5, 4300912), (7, 3072080), (8, 2688070), (10, 2150456), (11, 1954960), (14, 1536040), (16, 1344035), (20, 1075228), (22, 977480), (28, 768020), (35, 614416), (40, 537614), (44, 488740), (55, 390992), (56, 384010), (70, 307208), (77, 279280), (80, 268807), (88, 244370), (110, 195496), (112, 192005), (140, 153604), (154, 139640), (176, 122185), (220, 97748), (280, 76802), (308, 69820), (385, 55856), (440, 48874), (560, 38401), (616, 34910), (770, 27928), (880, 24437), (1232, 17455), (1540, 13964), (3080, 6982), (3491, 6160)]