28539728

素因数分解:

$2^4\times 7^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1$

素因数の和:220

約数の個数: 80

約数和(自身を含む): 66495744

約数和(自身を除く): 37956016

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 37, 56, 71, 74, 97, 112, 142, 148, 194, 259, 284, 296, 388, 497, 518, 568, 592, 679, 776, 994, 1036, 1136, 1358, 1552, 1988, 2072, 2627, 2716, 3589, 3976, 4144, 5254, 5432, 6887, 7178, 7952, 10508, 10864, 13774, 14356, 18389, 21016, 25123, 27548, 28712, 36778, 42032, 48209, 50246, 55096, 57424, 73556, 96418, 100492, 110192, 147112, 192836, 200984, 254819, 294224, 385672, 401968, 509638, 771344, 1019276, 1783733, 2038552, 3567466, 4077104, 7134932, 14269864, 28539728]

約数ペア:

[(1, 28539728), (2, 14269864), (4, 7134932), (7, 4077104), (8, 3567466), (14, 2038552), (16, 1783733), (28, 1019276), (37, 771344), (56, 509638), (71, 401968), (74, 385672), (97, 294224), (112, 254819), (142, 200984), (148, 192836), (194, 147112), (259, 110192), (284, 100492), (296, 96418), (388, 73556), (497, 57424), (518, 55096), (568, 50246), (592, 48209), (679, 42032), (776, 36778), (994, 28712), (1036, 27548), (1136, 25123), (1358, 21016), (1552, 18389), (1988, 14356), (2072, 13774), (2627, 10864), (2716, 10508), (3589, 7952), (3976, 7178), (4144, 6887), (5254, 5432)]