20405616

素因数分解:

$2^4\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{5521}}^1$

素因数の和:5550

約数の個数: 80

約数和(自身を含む): 65733888

約数和(自身を除く): 45328272

約数列:

[1, 2, 3, 4, 6, 7, 8, 11, 12, 14, 16, 21, 22, 24, 28, 33, 42, 44, 48, 56, 66, 77, 84, 88, 112, 132, 154, 168, 176, 231, 264, 308, 336, 462, 528, 616, 924, 1232, 1848, 3696, 5521, 11042, 16563, 22084, 33126, 38647, 44168, 60731, 66252, 77294, 88336, 115941, 121462, 132504, 154588, 182193, 231882, 242924, 265008, 309176, 364386, 425117, 463764, 485848, 618352, 728772, 850234, 927528, 971696, 1275351, 1457544, 1700468, 1855056, 2550702, 2915088, 3400936, 5101404, 6801872, 10202808, 20405616]

約数ペア:

[(1, 20405616), (2, 10202808), (3, 6801872), (4, 5101404), (6, 3400936), (7, 2915088), (8, 2550702), (11, 1855056), (12, 1700468), (14, 1457544), (16, 1275351), (21, 971696), (22, 927528), (24, 850234), (28, 728772), (33, 618352), (42, 485848), (44, 463764), (48, 425117), (56, 364386), (66, 309176), (77, 265008), (84, 242924), (88, 231882), (112, 182193), (132, 154588), (154, 132504), (168, 121462), (176, 115941), (231, 88336), (264, 77294), (308, 66252), (336, 60731), (462, 44168), (528, 38647), (616, 33126), (924, 22084), (1232, 16563), (1848, 11042), (3696, 5521)]