248912079

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{8731}}^1$

素因数の和:8807

約数の個数: 32

約数和(自身を含む): 387281664

約数和(自身を除く): 138369585

約数列:

[1, 3, 13, 17, 39, 43, 51, 129, 221, 559, 663, 731, 1677, 2193, 8731, 9503, 26193, 28509, 113503, 148427, 340509, 375433, 445281, 1126299, 1929551, 4880629, 5788653, 6382361, 14641887, 19147083, 82970693, 248912079]

約数ペア:

[(1, 248912079), (3, 82970693), (13, 19147083), (17, 14641887), (39, 6382361), (43, 5788653), (51, 4880629), (129, 1929551), (221, 1126299), (559, 445281), (663, 375433), (731, 340509), (1677, 148427), (2193, 113503), (8731, 28509), (9503, 26193)]