21980644

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{523}}^1$

素因数の和:632

約数の個数: 48

約数和(自身を含む): 46950400

約数和(自身を除く): 24969756

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 79, 133, 158, 266, 316, 523, 532, 553, 1046, 1106, 1501, 2092, 2212, 3002, 3661, 6004, 7322, 9937, 10507, 14644, 19874, 21014, 39748, 41317, 42028, 69559, 82634, 139118, 165268, 278236, 289219, 578438, 785023, 1156876, 1570046, 3140092, 5495161, 10990322, 21980644]

約数ペア:

[(1, 21980644), (2, 10990322), (4, 5495161), (7, 3140092), (14, 1570046), (19, 1156876), (28, 785023), (38, 578438), (76, 289219), (79, 278236), (133, 165268), (158, 139118), (266, 82634), (316, 69559), (523, 42028), (532, 41317), (553, 39748), (1046, 21014), (1106, 19874), (1501, 14644), (2092, 10507), (2212, 9937), (3002, 7322), (3661, 6004)]