256505760

素因数分解:

$2^5\times 3^2\times 5^1\times 7^1\times {\mathrm{25447}}^1$

素因数の和:25475

約数の個数: 144

約数和(自身を含む): 1000411776

約数和(自身を除く): 743906016

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 96, 105, 112, 120, 126, 140, 144, 160, 168, 180, 210, 224, 240, 252, 280, 288, 315, 336, 360, 420, 480, 504, 560, 630, 672, 720, 840, 1008, 1120, 1260, 1440, 1680, 2016, 2520, 3360, 5040, 10080, 25447, 50894, 76341, 101788, 127235, 152682, 178129, 203576, 229023, 254470, 305364, 356258, 381705, 407152, 458046, 508940, 534387, 610728, 712516, 763410, 814304, 890645, 916092, 1017880, 1068774, 1145115, 1221456, 1425032, 1526820, 1603161, 1781290, 1832184, 2035760, 2137548, 2290230, 2442912, 2671935, 2850064, 3053640, 3206322, 3562580, 3664368, 4071520, 4275096, 4580460, 5343870, 5700128, 6107280, 6412644, 7125160, 7328736, 8015805, 8550192, 9160920, 10687740, 12214560, 12825288, 14250320, 16031610, 17100384, 18321840, 21375480, 25650576, 28500640, 32063220, 36643680, 42750960, 51301152, 64126440, 85501920, 128252880, 256505760]

約数ペア:

[(1, 256505760), (2, 128252880), (3, 85501920), (4, 64126440), (5, 51301152), (6, 42750960), (7, 36643680), (8, 32063220), (9, 28500640), (10, 25650576), (12, 21375480), (14, 18321840), (15, 17100384), (16, 16031610), (18, 14250320), (20, 12825288), (21, 12214560), (24, 10687740), (28, 9160920), (30, 8550192), (32, 8015805), (35, 7328736), (36, 7125160), (40, 6412644), (42, 6107280), (45, 5700128), (48, 5343870), (56, 4580460), (60, 4275096), (63, 4071520), (70, 3664368), (72, 3562580), (80, 3206322), (84, 3053640), (90, 2850064), (96, 2671935), (105, 2442912), (112, 2290230), (120, 2137548), (126, 2035760), (140, 1832184), (144, 1781290), (160, 1603161), (168, 1526820), (180, 1425032), (210, 1221456), (224, 1145115), (240, 1068774), (252, 1017880), (280, 916092), (288, 890645), (315, 814304), (336, 763410), (360, 712516), (420, 610728), (480, 534387), (504, 508940), (560, 458046), (630, 407152), (672, 381705), (720, 356258), (840, 305364), (1008, 254470), (1120, 229023), (1260, 203576), (1440, 178129), (1680, 152682), (2016, 127235), (2520, 101788), (3360, 76341), (5040, 50894), (10080, 25447)]