21499324

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^2\times {\mathrm{83}}^1$

素因数の和:163

約数の個数: 72

約数和(自身を含む): 49166208

約数和(自身を除く): 27666884

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 29, 44, 58, 77, 83, 116, 154, 166, 203, 308, 319, 332, 406, 581, 638, 812, 841, 913, 1162, 1276, 1682, 1826, 2233, 2324, 2407, 3364, 3652, 4466, 4814, 5887, 6391, 8932, 9251, 9628, 11774, 12782, 16849, 18502, 23548, 25564, 26477, 33698, 37004, 52954, 64757, 67396, 69803, 105908, 129514, 139606, 185339, 259028, 279212, 370678, 488621, 741356, 767833, 977242, 1535666, 1954484, 3071332, 5374831, 10749662, 21499324]

約数ペア:

[(1, 21499324), (2, 10749662), (4, 5374831), (7, 3071332), (11, 1954484), (14, 1535666), (22, 977242), (28, 767833), (29, 741356), (44, 488621), (58, 370678), (77, 279212), (83, 259028), (116, 185339), (154, 139606), (166, 129514), (203, 105908), (308, 69803), (319, 67396), (332, 64757), (406, 52954), (581, 37004), (638, 33698), (812, 26477), (841, 25564), (913, 23548), (1162, 18502), (1276, 16849), (1682, 12782), (1826, 11774), (2233, 9628), (2324, 9251), (2407, 8932), (3364, 6391), (3652, 5887), (4466, 4814)]