21197316

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{1987}}^1$

素因数の和:2128

約数の個数: 48

約数和(自身を含む): 56999936

約数和(自身を除く): 35802620

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 127, 254, 381, 508, 762, 889, 1524, 1778, 1987, 2667, 3556, 3974, 5334, 5961, 7948, 10668, 11922, 13909, 23844, 27818, 41727, 55636, 83454, 166908, 252349, 504698, 757047, 1009396, 1514094, 1766443, 3028188, 3532886, 5299329, 7065772, 10598658, 21197316]

約数ペア:

[(1, 21197316), (2, 10598658), (3, 7065772), (4, 5299329), (6, 3532886), (7, 3028188), (12, 1766443), (14, 1514094), (21, 1009396), (28, 757047), (42, 504698), (84, 252349), (127, 166908), (254, 83454), (381, 55636), (508, 41727), (762, 27818), (889, 23844), (1524, 13909), (1778, 11922), (1987, 10668), (2667, 7948), (3556, 5961), (3974, 5334)]