21273483

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{131}}^1$

素因数の和:208

約数の個数: 64

約数和(自身を含む): 38522880

約数和(自身を除く): 17249397

約数列:

[1, 3, 7, 11, 19, 21, 33, 37, 57, 77, 111, 131, 133, 209, 231, 259, 393, 399, 407, 627, 703, 777, 917, 1221, 1441, 1463, 2109, 2489, 2751, 2849, 4323, 4389, 4847, 4921, 7467, 7733, 8547, 10087, 14541, 14763, 17423, 23199, 27379, 30261, 33929, 52269, 53317, 54131, 82137, 92093, 101787, 159951, 162393, 191653, 276279, 373219, 574959, 644651, 1013023, 1119657, 1933953, 3039069, 7091161, 21273483]

約数ペア:

[(1, 21273483), (3, 7091161), (7, 3039069), (11, 1933953), (19, 1119657), (21, 1013023), (33, 644651), (37, 574959), (57, 373219), (77, 276279), (111, 191653), (131, 162393), (133, 159951), (209, 101787), (231, 92093), (259, 82137), (393, 54131), (399, 53317), (407, 52269), (627, 33929), (703, 30261), (777, 27379), (917, 23199), (1221, 17423), (1441, 14763), (1463, 14541), (2109, 10087), (2489, 8547), (2751, 7733), (2849, 7467), (4323, 4921), (4389, 4847)]