388738185983

素因数分解:

$7^4\times {\mathrm{37}}^1\times {\mathrm{139}}^1\times {\mathrm{31481}}^1$

素因数の和:31685

約数の個数: 40

約数和(自身を含む): 469123356240

約数和(自身を除く): 80385170257

約数列:

[1, 7, 37, 49, 139, 259, 343, 973, 1813, 2401, 5143, 6811, 12691, 31481, 36001, 47677, 88837, 220367, 252007, 333739, 1164797, 1542569, 1764049, 4375859, 8153579, 10797983, 12348343, 30631013, 57075053, 75585881, 161906783, 214417091, 399525371, 1133347481, 1500919637, 2796677597, 7933432367, 10506437459, 55534026569, 388738185983]

約数ペア:

[(1, 388738185983), (7, 55534026569), (37, 10506437459), (49, 7933432367), (139, 2796677597), (259, 1500919637), (343, 1133347481), (973, 399525371), (1813, 214417091), (2401, 161906783), (5143, 75585881), (6811, 57075053), (12691, 30631013), (31481, 12348343), (36001, 10797983), (47677, 8153579), (88837, 4375859), (220367, 1764049), (252007, 1542569), (333739, 1164797)]