257339907

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{991}}^1$

素因数の和:1112

約数の個数: 48

約数和(自身を含む): 422163456

約数和(自身を除く): 164823549

約数列:

[1, 3, 9, 11, 33, 43, 61, 99, 129, 183, 387, 473, 549, 671, 991, 1419, 2013, 2623, 2973, 4257, 6039, 7869, 8919, 10901, 23607, 28853, 32703, 42613, 60451, 86559, 98109, 127839, 181353, 259677, 383517, 468743, 544059, 664961, 1406229, 1994883, 2599393, 4218687, 5984649, 7798179, 23394537, 28593323, 85779969, 257339907]

約数ペア:

[(1, 257339907), (3, 85779969), (9, 28593323), (11, 23394537), (33, 7798179), (43, 5984649), (61, 4218687), (99, 2599393), (129, 1994883), (183, 1406229), (387, 664961), (473, 544059), (549, 468743), (671, 383517), (991, 259677), (1419, 181353), (2013, 127839), (2623, 98109), (2973, 86559), (4257, 60451), (6039, 42613), (7869, 32703), (8919, 28853), (10901, 23607)]