260896000

素因数分解:

$2^8\times 5^3\times {\mathrm{31}}^1\times {\mathrm{263}}^1$

素因数の和:325

約数の個数: 144

約数和(自身を含む): 673440768

約数和(自身を除く): 412544768

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 32, 40, 50, 62, 64, 80, 100, 124, 125, 128, 155, 160, 200, 248, 250, 256, 263, 310, 320, 400, 496, 500, 526, 620, 640, 775, 800, 992, 1000, 1052, 1240, 1280, 1315, 1550, 1600, 1984, 2000, 2104, 2480, 2630, 3100, 3200, 3875, 3968, 4000, 4208, 4960, 5260, 6200, 6400, 6575, 7750, 7936, 8000, 8153, 8416, 9920, 10520, 12400, 13150, 15500, 16000, 16306, 16832, 19840, 21040, 24800, 26300, 31000, 32000, 32612, 32875, 33664, 39680, 40765, 42080, 49600, 52600, 62000, 65224, 65750, 67328, 81530, 84160, 99200, 105200, 124000, 130448, 131500, 163060, 168320, 198400, 203825, 210400, 248000, 260896, 263000, 326120, 336640, 407650, 420800, 496000, 521792, 526000, 652240, 815300, 841600, 992000, 1019125, 1043584, 1052000, 1304480, 1630600, 1683200, 2038250, 2087168, 2104000, 2608960, 3261200, 4076500, 4208000, 5217920, 6522400, 8153000, 8416000, 10435840, 13044800, 16306000, 26089600, 32612000, 52179200, 65224000, 130448000, 260896000]

約数ペア:

[(1, 260896000), (2, 130448000), (4, 65224000), (5, 52179200), (8, 32612000), (10, 26089600), (16, 16306000), (20, 13044800), (25, 10435840), (31, 8416000), (32, 8153000), (40, 6522400), (50, 5217920), (62, 4208000), (64, 4076500), (80, 3261200), (100, 2608960), (124, 2104000), (125, 2087168), (128, 2038250), (155, 1683200), (160, 1630600), (200, 1304480), (248, 1052000), (250, 1043584), (256, 1019125), (263, 992000), (310, 841600), (320, 815300), (400, 652240), (496, 526000), (500, 521792), (526, 496000), (620, 420800), (640, 407650), (775, 336640), (800, 326120), (992, 263000), (1000, 260896), (1052, 248000), (1240, 210400), (1280, 203825), (1315, 198400), (1550, 168320), (1600, 163060), (1984, 131500), (2000, 130448), (2104, 124000), (2480, 105200), (2630, 99200), (3100, 84160), (3200, 81530), (3875, 67328), (3968, 65750), (4000, 65224), (4208, 62000), (4960, 52600), (5260, 49600), (6200, 42080), (6400, 40765), (6575, 39680), (7750, 33664), (7936, 32875), (8000, 32612), (8153, 32000), (8416, 31000), (9920, 26300), (10520, 24800), (12400, 21040), (13150, 19840), (15500, 16832), (16000, 16306)]