20903113

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1$

素因数の和:118

約数の個数: 48

約数和(自身を含む): 29111040

約数和(自身を除く): 8207927

約数列:

[1, 7, 11, 23, 29, 37, 77, 121, 161, 203, 253, 259, 319, 407, 667, 847, 851, 1073, 1771, 2233, 2783, 2849, 3509, 4477, 4669, 5957, 7337, 7511, 9361, 11803, 19481, 24563, 24679, 31339, 51359, 65527, 80707, 82621, 102971, 129833, 172753, 271469, 564949, 720797, 908831, 1900283, 2986159, 20903113]

約数ペア:

[(1, 20903113), (7, 2986159), (11, 1900283), (23, 908831), (29, 720797), (37, 564949), (77, 271469), (121, 172753), (161, 129833), (203, 102971), (253, 82621), (259, 80707), (319, 65527), (407, 51359), (667, 31339), (847, 24679), (851, 24563), (1073, 19481), (1771, 11803), (2233, 9361), (2783, 7511), (2849, 7337), (3509, 5957), (4477, 4669)]