278312671

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{107}}^1\times {\mathrm{283}}^1$

素因数の和:511

約数の個数: 32

約数和(自身を含む): 350396928

約数和(自身を除く): 72084257

約数列:

[1, 7, 13, 91, 101, 107, 283, 707, 749, 1313, 1391, 1981, 3679, 9191, 9737, 10807, 25753, 28583, 30281, 75649, 140491, 200081, 211967, 371579, 393653, 983437, 2601053, 2755571, 3058381, 21408667, 39758953, 278312671]

約数ペア:

[(1, 278312671), (7, 39758953), (13, 21408667), (91, 3058381), (101, 2755571), (107, 2601053), (283, 983437), (707, 393653), (749, 371579), (1313, 211967), (1391, 200081), (1981, 140491), (3679, 75649), (9191, 30281), (9737, 28583), (10807, 25753)]