21373924

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1$

素因数の和:161

約数の個数: 72

約数和(自身を含む): 45879680

約数和(自身を除く): 24505756

約数列:

[1, 2, 4, 11, 13, 22, 26, 43, 44, 52, 79, 86, 121, 143, 158, 172, 242, 286, 316, 473, 484, 559, 572, 869, 946, 1027, 1118, 1573, 1738, 1892, 2054, 2236, 3146, 3397, 3476, 4108, 5203, 6149, 6292, 6794, 9559, 10406, 11297, 12298, 13588, 19118, 20812, 22594, 24596, 37367, 38236, 44161, 45188, 67639, 74734, 88322, 124267, 135278, 149468, 176644, 248534, 270556, 411037, 485771, 497068, 822074, 971542, 1644148, 1943084, 5343481, 10686962, 21373924]

約数ペア:

[(1, 21373924), (2, 10686962), (4, 5343481), (11, 1943084), (13, 1644148), (22, 971542), (26, 822074), (43, 497068), (44, 485771), (52, 411037), (79, 270556), (86, 248534), (121, 176644), (143, 149468), (158, 135278), (172, 124267), (242, 88322), (286, 74734), (316, 67639), (473, 45188), (484, 44161), (559, 38236), (572, 37367), (869, 24596), (946, 22594), (1027, 20812), (1118, 19118), (1573, 13588), (1738, 12298), (1892, 11297), (2054, 10406), (2236, 9559), (3146, 6794), (3397, 6292), (3476, 6149), (4108, 5203)]