20385482880

素因数分解:

$2^7\times 3^1\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{9661}}^1$

素因数の和:9847

約数の個数: 256

約数和(自身を含む): 74742140160

約数和(自身を除く): 54356657280

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 56, 60, 64, 70, 80, 84, 96, 105, 112, 120, 128, 140, 157, 160, 168, 192, 210, 224, 240, 280, 314, 320, 336, 384, 420, 448, 471, 480, 560, 628, 640, 672, 785, 840, 896, 942, 960, 1099, 1120, 1256, 1344, 1570, 1680, 1884, 1920, 2198, 2240, 2355, 2512, 2688, 3140, 3297, 3360, 3768, 4396, 4480, 4710, 5024, 5495, 6280, 6594, 6720, 7536, 8792, 9420, 9661, 10048, 10990, 12560, 13188, 13440, 15072, 16485, 17584, 18840, 19322, 20096, 21980, 25120, 26376, 28983, 30144, 32970, 35168, 37680, 38644, 43960, 48305, 50240, 52752, 57966, 60288, 65940, 67627, 70336, 75360, 77288, 87920, 96610, 100480, 105504, 115932, 131880, 135254, 140672, 144915, 150720, 154576, 175840, 193220, 202881, 211008, 231864, 263760, 270508, 289830, 301440, 309152, 338135, 351680, 386440, 405762, 422016, 463728, 527520, 541016, 579660, 618304, 676270, 703360, 772880, 811524, 927456, 1014405, 1055040, 1082032, 1159320, 1236608, 1352540, 1516777, 1545760, 1623048, 1854912, 2028810, 2110080, 2164064, 2318640, 2705080, 3033554, 3091520, 3246096, 3709824, 4057620, 4328128, 4550331, 4637280, 5410160, 6067108, 6183040, 6492192, 7583885, 8115240, 8656256, 9100662, 9274560, 10617439, 10820320, 12134216, 12984384, 15167770, 16230480, 18201324, 18549120, 21234878, 21640640, 22751655, 24268432, 25968768, 30335540, 31852317, 32460960, 36402648, 42469756, 43281280, 45503310, 48536864, 53087195, 60671080, 63704634, 64921920, 72805296, 84939512, 91006620, 97073728, 106174390, 121342160, 127409268, 129843840, 145610592, 159261585, 169879024, 182013240, 194147456, 212348780, 242684320, 254818536, 291221184, 318523170, 339758048, 364026480, 424697560, 485368640, 509637072, 582442368, 637046340, 679516096, 728052960, 849395120, 970737280, 1019274144, 1274092680, 1359032192, 1456105920, 1698790240, 2038548288, 2548185360, 2912211840, 3397580480, 4077096576, 5096370720, 6795160960, 10192741440, 20385482880]

約数ペア:

[(1, 20385482880), (2, 10192741440), (3, 6795160960), (4, 5096370720), (5, 4077096576), (6, 3397580480), (7, 2912211840), (8, 2548185360), (10, 2038548288), (12, 1698790240), (14, 1456105920), (15, 1359032192), (16, 1274092680), (20, 1019274144), (21, 970737280), (24, 849395120), (28, 728052960), (30, 679516096), (32, 637046340), (35, 582442368), (40, 509637072), (42, 485368640), (48, 424697560), (56, 364026480), (60, 339758048), (64, 318523170), (70, 291221184), (80, 254818536), (84, 242684320), (96, 212348780), (105, 194147456), (112, 182013240), (120, 169879024), (128, 159261585), (140, 145610592), (157, 129843840), (160, 127409268), (168, 121342160), (192, 106174390), (210, 97073728), (224, 91006620), (240, 84939512), (280, 72805296), (314, 64921920), (320, 63704634), (336, 60671080), (384, 53087195), (420, 48536864), (448, 45503310), (471, 43281280), (480, 42469756), (560, 36402648), (628, 32460960), (640, 31852317), (672, 30335540), (785, 25968768), (840, 24268432), (896, 22751655), (942, 21640640), (960, 21234878), (1099, 18549120), (1120, 18201324), (1256, 16230480), (1344, 15167770), (1570, 12984384), (1680, 12134216), (1884, 10820320), (1920, 10617439), (2198, 9274560), (2240, 9100662), (2355, 8656256), (2512, 8115240), (2688, 7583885), (3140, 6492192), (3297, 6183040), (3360, 6067108), (3768, 5410160), (4396, 4637280), (4480, 4550331), (4710, 4328128), (5024, 4057620), (5495, 3709824), (6280, 3246096), (6594, 3091520), (6720, 3033554), (7536, 2705080), (8792, 2318640), (9420, 2164064), (9661, 2110080), (10048, 2028810), (10990, 1854912), (12560, 1623048), (13188, 1545760), (13440, 1516777), (15072, 1352540), (16485, 1236608), (17584, 1159320), (18840, 1082032), (19322, 1055040), (20096, 1014405), (21980, 927456), (25120, 811524), (26376, 772880), (28983, 703360), (30144, 676270), (32970, 618304), (35168, 579660), (37680, 541016), (38644, 527520), (43960, 463728), (48305, 422016), (50240, 405762), (52752, 386440), (57966, 351680), (60288, 338135), (65940, 309152), (67627, 301440), (70336, 289830), (75360, 270508), (77288, 263760), (87920, 231864), (96610, 211008), (100480, 202881), (105504, 193220), (115932, 175840), (131880, 154576), (135254, 150720), (140672, 144915)]