21551299

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{283}}^1$

素因数の和:367

約数の個数: 32

約数和(自身を含む): 28790784

約数和(自身を除く): 7239485

約数列:

[1, 7, 11, 23, 43, 77, 161, 253, 283, 301, 473, 989, 1771, 1981, 3113, 3311, 6509, 6923, 10879, 12169, 21791, 45563, 71599, 76153, 85183, 133859, 279887, 501193, 937013, 1959209, 3078757, 21551299]

約数ペア:

[(1, 21551299), (7, 3078757), (11, 1959209), (23, 937013), (43, 501193), (77, 279887), (161, 133859), (253, 85183), (283, 76153), (301, 71599), (473, 45563), (989, 21791), (1771, 12169), (1981, 10879), (3113, 6923), (3311, 6509)]