778330400

素因数分解:

$2^5\times 5^2\times {\mathrm{71}}^2\times {\mathrm{193}}^1$

素因数の和:355

約数の個数: 108

約数和(自身を含む): 1937223666

約数和(自身を除く): 1158893266

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 71, 80, 100, 142, 160, 193, 200, 284, 355, 386, 400, 568, 710, 772, 800, 965, 1136, 1420, 1544, 1775, 1930, 2272, 2840, 3088, 3550, 3860, 4825, 5041, 5680, 6176, 7100, 7720, 9650, 10082, 11360, 13703, 14200, 15440, 19300, 20164, 25205, 27406, 28400, 30880, 38600, 40328, 50410, 54812, 56800, 68515, 77200, 80656, 100820, 109624, 126025, 137030, 154400, 161312, 201640, 219248, 252050, 274060, 342575, 403280, 438496, 504100, 548120, 685150, 806560, 972913, 1008200, 1096240, 1370300, 1945826, 2016400, 2192480, 2740600, 3891652, 4032800, 4864565, 5481200, 7783304, 9729130, 10962400, 15566608, 19458260, 24322825, 31133216, 38916520, 48645650, 77833040, 97291300, 155666080, 194582600, 389165200, 778330400]

約数ペア:

[(1, 778330400), (2, 389165200), (4, 194582600), (5, 155666080), (8, 97291300), (10, 77833040), (16, 48645650), (20, 38916520), (25, 31133216), (32, 24322825), (40, 19458260), (50, 15566608), (71, 10962400), (80, 9729130), (100, 7783304), (142, 5481200), (160, 4864565), (193, 4032800), (200, 3891652), (284, 2740600), (355, 2192480), (386, 2016400), (400, 1945826), (568, 1370300), (710, 1096240), (772, 1008200), (800, 972913), (965, 806560), (1136, 685150), (1420, 548120), (1544, 504100), (1775, 438496), (1930, 403280), (2272, 342575), (2840, 274060), (3088, 252050), (3550, 219248), (3860, 201640), (4825, 161312), (5041, 154400), (5680, 137030), (6176, 126025), (7100, 109624), (7720, 100820), (9650, 80656), (10082, 77200), (11360, 68515), (13703, 56800), (14200, 54812), (15440, 50410), (19300, 40328), (20164, 38600), (25205, 30880), (27406, 28400)]