21187128

素因数分解:

$2^3\times 3^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{479}}^1$

素因数の和:604

約数の個数: 64

約数和(自身を含む): 56448000

約数和(自身を除く): 35260872

約数列:

[1, 2, 3, 4, 6, 8, 12, 19, 24, 38, 57, 76, 97, 114, 152, 194, 228, 291, 388, 456, 479, 582, 776, 958, 1164, 1437, 1843, 1916, 2328, 2874, 3686, 3832, 5529, 5748, 7372, 9101, 11058, 11496, 14744, 18202, 22116, 27303, 36404, 44232, 46463, 54606, 72808, 92926, 109212, 139389, 185852, 218424, 278778, 371704, 557556, 882797, 1115112, 1765594, 2648391, 3531188, 5296782, 7062376, 10593564, 21187128]

約数ペア:

[(1, 21187128), (2, 10593564), (3, 7062376), (4, 5296782), (6, 3531188), (8, 2648391), (12, 1765594), (19, 1115112), (24, 882797), (38, 557556), (57, 371704), (76, 278778), (97, 218424), (114, 185852), (152, 139389), (194, 109212), (228, 92926), (291, 72808), (388, 54606), (456, 46463), (479, 44232), (582, 36404), (776, 27303), (958, 22116), (1164, 18202), (1437, 14744), (1843, 11496), (1916, 11058), (2328, 9101), (2874, 7372), (3686, 5748), (3832, 5529)]