640046449

素因数分解:

$7^1\times {\mathrm{41}}^1\times {\mathrm{83}}^1\times {\mathrm{97}}^1\times {\mathrm{277}}^1$

素因数の和:505

約数の個数: 32

約数和(自身を含む): 768934656

約数和(自身を除く): 128888207

約数列:

[1, 7, 41, 83, 97, 277, 287, 581, 679, 1939, 3403, 3977, 8051, 11357, 22991, 23821, 26869, 27839, 56357, 79499, 160937, 188083, 330091, 942631, 1101629, 2230127, 2310637, 6598417, 7711403, 15610889, 91435207, 640046449]

約数ペア:

[(1, 640046449), (7, 91435207), (41, 15610889), (83, 7711403), (97, 6598417), (277, 2310637), (287, 2230127), (581, 1101629), (679, 942631), (1939, 330091), (3403, 188083), (3977, 160937), (8051, 79499), (11357, 56357), (22991, 27839), (23821, 26869)]