20316989

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{17}}^2\times {\mathrm{83}}^1$

素因数の和:146

約数の個数: 36

約数和(自身を含む): 27438432

約数和(自身を除く): 7121443

約数列:

[1, 7, 11, 17, 77, 83, 119, 121, 187, 289, 581, 847, 913, 1309, 1411, 2023, 2057, 3179, 6391, 9877, 10043, 14399, 15521, 22253, 23987, 34969, 70301, 108647, 167909, 170731, 244783, 263857, 1195117, 1846999, 2902427, 20316989]

約数ペア:

[(1, 20316989), (7, 2902427), (11, 1846999), (17, 1195117), (77, 263857), (83, 244783), (119, 170731), (121, 167909), (187, 108647), (289, 70301), (581, 34969), (847, 23987), (913, 22253), (1309, 15521), (1411, 14399), (2023, 10043), (2057, 9877), (3179, 6391)]