21000496972

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{257}}^1\times {\mathrm{7741}}^1$

素因数の和:8051

約数の個数: 96

約数和(自身を含む): 46979694720

約数和(自身を除く): 25979197748

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 29, 52, 58, 91, 116, 182, 203, 257, 364, 377, 406, 514, 754, 812, 1028, 1508, 1799, 2639, 3341, 3598, 5278, 6682, 7196, 7453, 7741, 10556, 13364, 14906, 15482, 23387, 29812, 30964, 46774, 52171, 54187, 93548, 96889, 100633, 104342, 108374, 193778, 201266, 208684, 216748, 224489, 387556, 402532, 448978, 678223, 704431, 897956, 1356446, 1408862, 1571423, 1989437, 2712892, 2817724, 2918357, 3142846, 3978874, 5836714, 6285692, 7957748, 11673428, 13926059, 20428499, 25862681, 27852118, 40856998, 51725362, 55704236, 57693673, 81713996, 103450724, 115387346, 181038767, 230774692, 362077534, 403855711, 724155068, 750017749, 807711422, 1500035498, 1615422844, 3000070996, 5250124243, 10500248486, 21000496972]

約数ペア:

[(1, 21000496972), (2, 10500248486), (4, 5250124243), (7, 3000070996), (13, 1615422844), (14, 1500035498), (26, 807711422), (28, 750017749), (29, 724155068), (52, 403855711), (58, 362077534), (91, 230774692), (116, 181038767), (182, 115387346), (203, 103450724), (257, 81713996), (364, 57693673), (377, 55704236), (406, 51725362), (514, 40856998), (754, 27852118), (812, 25862681), (1028, 20428499), (1508, 13926059), (1799, 11673428), (2639, 7957748), (3341, 6285692), (3598, 5836714), (5278, 3978874), (6682, 3142846), (7196, 2918357), (7453, 2817724), (7741, 2712892), (10556, 1989437), (13364, 1571423), (14906, 1408862), (15482, 1356446), (23387, 897956), (29812, 704431), (30964, 678223), (46774, 448978), (52171, 402532), (54187, 387556), (93548, 224489), (96889, 216748), (100633, 208684), (104342, 201266), (108374, 193778)]