20971002

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{127}}^1$

素因数の和:247

約数の個数: 64

約数和(自身を含む): 47738880

約数和(自身を除く): 26767878

約数列:

[1, 2, 3, 6, 13, 26, 29, 39, 58, 73, 78, 87, 127, 146, 174, 219, 254, 377, 381, 438, 754, 762, 949, 1131, 1651, 1898, 2117, 2262, 2847, 3302, 3683, 4234, 4953, 5694, 6351, 7366, 9271, 9906, 11049, 12702, 18542, 22098, 27521, 27813, 47879, 55042, 55626, 82563, 95758, 120523, 143637, 165126, 241046, 268859, 287274, 361569, 537718, 723138, 806577, 1613154, 3495167, 6990334, 10485501, 20971002]

約数ペア:

[(1, 20971002), (2, 10485501), (3, 6990334), (6, 3495167), (13, 1613154), (26, 806577), (29, 723138), (39, 537718), (58, 361569), (73, 287274), (78, 268859), (87, 241046), (127, 165126), (146, 143637), (174, 120523), (219, 95758), (254, 82563), (377, 55626), (381, 55042), (438, 47879), (754, 27813), (762, 27521), (949, 22098), (1131, 18542), (1651, 12702), (1898, 11049), (2117, 9906), (2262, 9271), (2847, 7366), (3302, 6351), (3683, 5694), (4234, 4953)]