19720764

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{139}}^1\times {\mathrm{563}}^1$

素因数の和:719

約数の個数: 72

約数和(自身を含む): 57482880

約数和(自身を除く): 37762116

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 139, 252, 278, 417, 556, 563, 834, 973, 1126, 1251, 1668, 1689, 1946, 2252, 2502, 2919, 3378, 3892, 3941, 5004, 5067, 5838, 6756, 7882, 8757, 10134, 11676, 11823, 15764, 17514, 20268, 23646, 35028, 35469, 47292, 70938, 78257, 141876, 156514, 234771, 313028, 469542, 547799, 704313, 939084, 1095598, 1408626, 1643397, 2191196, 2817252, 3286794, 4930191, 6573588, 9860382, 19720764]

約数ペア:

[(1, 19720764), (2, 9860382), (3, 6573588), (4, 4930191), (6, 3286794), (7, 2817252), (9, 2191196), (12, 1643397), (14, 1408626), (18, 1095598), (21, 939084), (28, 704313), (36, 547799), (42, 469542), (63, 313028), (84, 234771), (126, 156514), (139, 141876), (252, 78257), (278, 70938), (417, 47292), (556, 35469), (563, 35028), (834, 23646), (973, 20268), (1126, 17514), (1251, 15764), (1668, 11823), (1689, 11676), (1946, 10134), (2252, 8757), (2502, 7882), (2919, 6756), (3378, 5838), (3892, 5067), (3941, 5004)]