256212720

素因数分解:

$2^4\times 3^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{2081}}^1$

素因数の和:2125

約数の個数: 200

約数和(自身を含む): 937149840

約数和(自身を除く): 680937120

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 19, 20, 24, 27, 30, 36, 38, 40, 45, 48, 54, 57, 60, 72, 76, 80, 81, 90, 95, 108, 114, 120, 135, 144, 152, 162, 171, 180, 190, 216, 228, 240, 270, 285, 304, 324, 342, 360, 380, 405, 432, 456, 513, 540, 570, 648, 684, 720, 760, 810, 855, 912, 1026, 1080, 1140, 1296, 1368, 1520, 1539, 1620, 1710, 2052, 2081, 2160, 2280, 2565, 2736, 3078, 3240, 3420, 4104, 4162, 4560, 5130, 6156, 6243, 6480, 6840, 7695, 8208, 8324, 10260, 10405, 12312, 12486, 13680, 15390, 16648, 18729, 20520, 20810, 24624, 24972, 30780, 31215, 33296, 37458, 39539, 41040, 41620, 49944, 56187, 61560, 62430, 74916, 79078, 83240, 93645, 99888, 112374, 118617, 123120, 124860, 149832, 158156, 166480, 168561, 187290, 197695, 224748, 237234, 249720, 280935, 299664, 316312, 337122, 355851, 374580, 395390, 449496, 474468, 499440, 561870, 593085, 632624, 674244, 711702, 749160, 790780, 842805, 898992, 948936, 1067553, 1123740, 1186170, 1348488, 1423404, 1498320, 1581560, 1685610, 1779255, 1897872, 2135106, 2247480, 2372340, 2696976, 2846808, 3163120, 3202659, 3371220, 3558510, 4270212, 4494960, 4744680, 5337765, 5693616, 6405318, 6742440, 7117020, 8540424, 9489360, 10675530, 12810636, 13484880, 14234040, 16013295, 17080848, 21351060, 25621272, 28468080, 32026590, 42702120, 51242544, 64053180, 85404240, 128106360, 256212720]

約数ペア:

[(1, 256212720), (2, 128106360), (3, 85404240), (4, 64053180), (5, 51242544), (6, 42702120), (8, 32026590), (9, 28468080), (10, 25621272), (12, 21351060), (15, 17080848), (16, 16013295), (18, 14234040), (19, 13484880), (20, 12810636), (24, 10675530), (27, 9489360), (30, 8540424), (36, 7117020), (38, 6742440), (40, 6405318), (45, 5693616), (48, 5337765), (54, 4744680), (57, 4494960), (60, 4270212), (72, 3558510), (76, 3371220), (80, 3202659), (81, 3163120), (90, 2846808), (95, 2696976), (108, 2372340), (114, 2247480), (120, 2135106), (135, 1897872), (144, 1779255), (152, 1685610), (162, 1581560), (171, 1498320), (180, 1423404), (190, 1348488), (216, 1186170), (228, 1123740), (240, 1067553), (270, 948936), (285, 898992), (304, 842805), (324, 790780), (342, 749160), (360, 711702), (380, 674244), (405, 632624), (432, 593085), (456, 561870), (513, 499440), (540, 474468), (570, 449496), (648, 395390), (684, 374580), (720, 355851), (760, 337122), (810, 316312), (855, 299664), (912, 280935), (1026, 249720), (1080, 237234), (1140, 224748), (1296, 197695), (1368, 187290), (1520, 168561), (1539, 166480), (1620, 158156), (1710, 149832), (2052, 124860), (2081, 123120), (2160, 118617), (2280, 112374), (2565, 99888), (2736, 93645), (3078, 83240), (3240, 79078), (3420, 74916), (4104, 62430), (4162, 61560), (4560, 56187), (5130, 49944), (6156, 41620), (6243, 41040), (6480, 39539), (6840, 37458), (7695, 33296), (8208, 31215), (8324, 30780), (10260, 24972), (10405, 24624), (12312, 20810), (12486, 20520), (13680, 18729), (15390, 16648)]