21065044

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{5261}}^1$

素因数の和:5296

約数の個数: 48

約数和(自身を含む): 49504896

約数和(自身を除く): 28439852

約数列:

[1, 2, 4, 7, 11, 13, 14, 22, 26, 28, 44, 52, 77, 91, 143, 154, 182, 286, 308, 364, 572, 1001, 2002, 4004, 5261, 10522, 21044, 36827, 57871, 68393, 73654, 115742, 136786, 147308, 231484, 273572, 405097, 478751, 752323, 810194, 957502, 1504646, 1620388, 1915004, 3009292, 5266261, 10532522, 21065044]

約数ペア:

[(1, 21065044), (2, 10532522), (4, 5266261), (7, 3009292), (11, 1915004), (13, 1620388), (14, 1504646), (22, 957502), (26, 810194), (28, 752323), (44, 478751), (52, 405097), (77, 273572), (91, 231484), (143, 147308), (154, 136786), (182, 115742), (286, 73654), (308, 68393), (364, 57871), (572, 36827), (1001, 21044), (2002, 10522), (4004, 5261)]