20956936

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{2617}}^1$

素因数の和:2654

約数の個数: 64

約数和(自身を含む): 52778880

約数和(自身を除く): 31821944

約数列:

[1, 2, 4, 7, 8, 11, 13, 14, 22, 26, 28, 44, 52, 56, 77, 88, 91, 104, 143, 154, 182, 286, 308, 364, 572, 616, 728, 1001, 1144, 2002, 2617, 4004, 5234, 8008, 10468, 18319, 20936, 28787, 34021, 36638, 57574, 68042, 73276, 115148, 136084, 146552, 201509, 230296, 238147, 272168, 374231, 403018, 476294, 748462, 806036, 952588, 1496924, 1612072, 1905176, 2619617, 2993848, 5239234, 10478468, 20956936]

約数ペア:

[(1, 20956936), (2, 10478468), (4, 5239234), (7, 2993848), (8, 2619617), (11, 1905176), (13, 1612072), (14, 1496924), (22, 952588), (26, 806036), (28, 748462), (44, 476294), (52, 403018), (56, 374231), (77, 272168), (88, 238147), (91, 230296), (104, 201509), (143, 146552), (154, 136084), (182, 115148), (286, 73276), (308, 68042), (364, 57574), (572, 36638), (616, 34021), (728, 28787), (1001, 20936), (1144, 18319), (2002, 10468), (2617, 8008), (4004, 5234)]