278084247

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{349}}^1\times {\mathrm{1997}}^1$

素因数の和:2375

約数の個数: 32

約数和(自身を含む): 447552000

約数和(自身を除く): 169467753

約数列:

[1, 3, 7, 19, 21, 57, 133, 349, 399, 1047, 1997, 2443, 5991, 6631, 7329, 13979, 19893, 37943, 41937, 46417, 113829, 139251, 265601, 696953, 796803, 2090859, 4878671, 13242107, 14636013, 39726321, 92694749, 278084247]

約数ペア:

[(1, 278084247), (3, 92694749), (7, 39726321), (19, 14636013), (21, 13242107), (57, 4878671), (133, 2090859), (349, 796803), (399, 696953), (1047, 265601), (1997, 139251), (2443, 113829), (5991, 46417), (6631, 41937), (7329, 37943), (13979, 19893)]