28205121007

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{1297}}^1\times {\mathrm{7109}}^1$

素因数の和:8455

約数の個数: 32

約数和(自身を含む): 35438515200

約数和(自身を除く): 7233394193

約数列:

[1, 7, 19, 23, 133, 161, 437, 1297, 3059, 7109, 9079, 24643, 29831, 49763, 135071, 163507, 172501, 208817, 566789, 945497, 1144549, 3106633, 3967523, 9220373, 21746431, 64542611, 175187087, 212068579, 1226309609, 1484480053, 4029303001, 28205121007]

約数ペア:

[(1, 28205121007), (7, 4029303001), (19, 1484480053), (23, 1226309609), (133, 212068579), (161, 175187087), (437, 64542611), (1297, 21746431), (3059, 9220373), (7109, 3967523), (9079, 3106633), (24643, 1144549), (29831, 945497), (49763, 566789), (135071, 208817), (163507, 172501)]