20781648356

素因数分解:

$2^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{1901}}^1\times {\mathrm{13463}}^1$

素因数の和:15404

約数の個数: 48

約数和(自身を含む): 43022327040

約数和(自身を除く): 22240678684

約数列:

[1, 2, 4, 7, 14, 28, 29, 58, 116, 203, 406, 812, 1901, 3802, 7604, 13307, 13463, 26614, 26926, 53228, 53852, 55129, 94241, 110258, 188482, 220516, 376964, 385903, 390427, 771806, 780854, 1543612, 1561708, 2732989, 5465978, 10931956, 25593163, 51186326, 102372652, 179152141, 358304282, 716608564, 742201727, 1484403454, 2968806908, 5195412089, 10390824178, 20781648356]

約数ペア:

[(1, 20781648356), (2, 10390824178), (4, 5195412089), (7, 2968806908), (14, 1484403454), (28, 742201727), (29, 716608564), (58, 358304282), (116, 179152141), (203, 102372652), (406, 51186326), (812, 25593163), (1901, 10931956), (3802, 5465978), (7604, 2732989), (13307, 1561708), (13463, 1543612), (26614, 780854), (26926, 771806), (53228, 390427), (53852, 385903), (55129, 376964), (94241, 220516), (110258, 188482)]