21085792

素因数分解:

$2^5\times 7^1\times {\mathrm{13}}^2\times {\mathrm{557}}^1$

素因数の和:600

約数の個数: 72

約数和(自身を含む): 51465456

約数和(自身を除く): 30379664

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 52, 56, 91, 104, 112, 169, 182, 208, 224, 338, 364, 416, 557, 676, 728, 1114, 1183, 1352, 1456, 2228, 2366, 2704, 2912, 3899, 4456, 4732, 5408, 7241, 7798, 8912, 9464, 14482, 15596, 17824, 18928, 28964, 31192, 37856, 50687, 57928, 62384, 94133, 101374, 115856, 124768, 188266, 202748, 231712, 376532, 405496, 658931, 753064, 810992, 1317862, 1506128, 1621984, 2635724, 3012256, 5271448, 10542896, 21085792]

約数ペア:

[(1, 21085792), (2, 10542896), (4, 5271448), (7, 3012256), (8, 2635724), (13, 1621984), (14, 1506128), (16, 1317862), (26, 810992), (28, 753064), (32, 658931), (52, 405496), (56, 376532), (91, 231712), (104, 202748), (112, 188266), (169, 124768), (182, 115856), (208, 101374), (224, 94133), (338, 62384), (364, 57928), (416, 50687), (557, 37856), (676, 31192), (728, 28964), (1114, 18928), (1183, 17824), (1352, 15596), (1456, 14482), (2228, 9464), (2366, 8912), (2704, 7798), (2912, 7241), (3899, 5408), (4456, 4732)]