256965120

素因数分解:

$2^9\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{587}}^1$

素因数の和:635

約数の個数: 240

約数和(自身を含む): 938377440

約数和(自身を除く): 681412320

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 19, 20, 24, 30, 32, 36, 38, 40, 45, 48, 57, 60, 64, 72, 76, 80, 90, 95, 96, 114, 120, 128, 144, 152, 160, 171, 180, 190, 192, 228, 240, 256, 285, 288, 304, 320, 342, 360, 380, 384, 456, 480, 512, 570, 576, 587, 608, 640, 684, 720, 760, 768, 855, 912, 960, 1140, 1152, 1174, 1216, 1280, 1368, 1440, 1520, 1536, 1710, 1761, 1824, 1920, 2280, 2304, 2348, 2432, 2560, 2736, 2880, 2935, 3040, 3420, 3522, 3648, 3840, 4560, 4608, 4696, 4864, 5283, 5472, 5760, 5870, 6080, 6840, 7044, 7296, 7680, 8805, 9120, 9392, 9728, 10566, 10944, 11153, 11520, 11740, 12160, 13680, 14088, 14592, 17610, 18240, 18784, 21132, 21888, 22306, 23040, 23480, 24320, 26415, 27360, 28176, 29184, 33459, 35220, 36480, 37568, 42264, 43776, 44612, 46960, 48640, 52830, 54720, 55765, 56352, 66918, 70440, 72960, 75136, 84528, 87552, 89224, 93920, 100377, 105660, 109440, 111530, 112704, 133836, 140880, 145920, 150272, 167295, 169056, 178448, 187840, 200754, 211320, 218880, 223060, 225408, 267672, 281760, 300544, 334590, 338112, 356896, 375680, 401508, 422640, 437760, 446120, 450816, 501885, 535344, 563520, 669180, 676224, 713792, 751360, 803016, 845280, 892240, 901632, 1003770, 1070688, 1127040, 1338360, 1352448, 1427584, 1502720, 1606032, 1690560, 1784480, 2007540, 2141376, 2254080, 2676720, 2704896, 2855168, 3212064, 3381120, 3568960, 4015080, 4282752, 4508160, 5353440, 5710336, 6424128, 6762240, 7137920, 8030160, 8565504, 10706880, 12848256, 13524480, 14275840, 16060320, 17131008, 21413760, 25696512, 28551680, 32120640, 42827520, 51393024, 64241280, 85655040, 128482560, 256965120]

約数ペア:

[(1, 256965120), (2, 128482560), (3, 85655040), (4, 64241280), (5, 51393024), (6, 42827520), (8, 32120640), (9, 28551680), (10, 25696512), (12, 21413760), (15, 17131008), (16, 16060320), (18, 14275840), (19, 13524480), (20, 12848256), (24, 10706880), (30, 8565504), (32, 8030160), (36, 7137920), (38, 6762240), (40, 6424128), (45, 5710336), (48, 5353440), (57, 4508160), (60, 4282752), (64, 4015080), (72, 3568960), (76, 3381120), (80, 3212064), (90, 2855168), (95, 2704896), (96, 2676720), (114, 2254080), (120, 2141376), (128, 2007540), (144, 1784480), (152, 1690560), (160, 1606032), (171, 1502720), (180, 1427584), (190, 1352448), (192, 1338360), (228, 1127040), (240, 1070688), (256, 1003770), (285, 901632), (288, 892240), (304, 845280), (320, 803016), (342, 751360), (360, 713792), (380, 676224), (384, 669180), (456, 563520), (480, 535344), (512, 501885), (570, 450816), (576, 446120), (587, 437760), (608, 422640), (640, 401508), (684, 375680), (720, 356896), (760, 338112), (768, 334590), (855, 300544), (912, 281760), (960, 267672), (1140, 225408), (1152, 223060), (1174, 218880), (1216, 211320), (1280, 200754), (1368, 187840), (1440, 178448), (1520, 169056), (1536, 167295), (1710, 150272), (1761, 145920), (1824, 140880), (1920, 133836), (2280, 112704), (2304, 111530), (2348, 109440), (2432, 105660), (2560, 100377), (2736, 93920), (2880, 89224), (2935, 87552), (3040, 84528), (3420, 75136), (3522, 72960), (3648, 70440), (3840, 66918), (4560, 56352), (4608, 55765), (4696, 54720), (4864, 52830), (5283, 48640), (5472, 46960), (5760, 44612), (5870, 43776), (6080, 42264), (6840, 37568), (7044, 36480), (7296, 35220), (7680, 33459), (8805, 29184), (9120, 28176), (9392, 27360), (9728, 26415), (10566, 24320), (10944, 23480), (11153, 23040), (11520, 22306), (11740, 21888), (12160, 21132), (13680, 18784), (14088, 18240), (14592, 17610)]