20661285120

素因数分解:

$2^8\times 3^1\times 5^1\times 7^2\times {\mathrm{109807}}^1$

素因数の和:109845

約数の個数: 216

約数和(自身を含む): 76761062784

約数和(自身を除く): 56099777664

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, 49, 56, 60, 64, 70, 80, 84, 96, 98, 105, 112, 120, 128, 140, 147, 160, 168, 192, 196, 210, 224, 240, 245, 256, 280, 294, 320, 336, 384, 392, 420, 448, 480, 490, 560, 588, 640, 672, 735, 768, 784, 840, 896, 960, 980, 1120, 1176, 1280, 1344, 1470, 1568, 1680, 1792, 1920, 1960, 2240, 2352, 2688, 2940, 3136, 3360, 3840, 3920, 4480, 4704, 5376, 5880, 6272, 6720, 7840, 8960, 9408, 11760, 12544, 13440, 15680, 18816, 23520, 26880, 31360, 37632, 47040, 62720, 94080, 109807, 188160, 219614, 329421, 439228, 549035, 658842, 768649, 878456, 1098070, 1317684, 1537298, 1647105, 1756912, 2196140, 2305947, 2635368, 3074596, 3294210, 3513824, 3843245, 4392280, 4611894, 5270736, 5380543, 6149192, 6588420, 7027648, 7686490, 8784560, 9223788, 10541472, 10761086, 11529735, 12298384, 13176840, 14055296, 15372980, 16141629, 17569120, 18447576, 21082944, 21522172, 23059470, 24596768, 26353680, 26902715, 28110592, 30745960, 32283258, 35138240, 36895152, 42165888, 43044344, 46118940, 49193536, 52707360, 53805430, 61491920, 64566516, 70276480, 73790304, 80708145, 84331776, 86088688, 92237880, 98387072, 105414720, 107610860, 122983840, 129133032, 140552960, 147580608, 161416290, 172177376, 184475760, 196774144, 210829440, 215221720, 245967680, 258266064, 295161216, 322832580, 344354752, 368951520, 421658880, 430443440, 491935360, 516532128, 590322432, 645665160, 688709504, 737903040, 860886880, 983870720, 1033064256, 1291330320, 1377419008, 1475806080, 1721773760, 2066128512, 2582660640, 2951612160, 3443547520, 4132257024, 5165321280, 6887095040, 10330642560, 20661285120]

約数ペア:

[(1, 20661285120), (2, 10330642560), (3, 6887095040), (4, 5165321280), (5, 4132257024), (6, 3443547520), (7, 2951612160), (8, 2582660640), (10, 2066128512), (12, 1721773760), (14, 1475806080), (15, 1377419008), (16, 1291330320), (20, 1033064256), (21, 983870720), (24, 860886880), (28, 737903040), (30, 688709504), (32, 645665160), (35, 590322432), (40, 516532128), (42, 491935360), (48, 430443440), (49, 421658880), (56, 368951520), (60, 344354752), (64, 322832580), (70, 295161216), (80, 258266064), (84, 245967680), (96, 215221720), (98, 210829440), (105, 196774144), (112, 184475760), (120, 172177376), (128, 161416290), (140, 147580608), (147, 140552960), (160, 129133032), (168, 122983840), (192, 107610860), (196, 105414720), (210, 98387072), (224, 92237880), (240, 86088688), (245, 84331776), (256, 80708145), (280, 73790304), (294, 70276480), (320, 64566516), (336, 61491920), (384, 53805430), (392, 52707360), (420, 49193536), (448, 46118940), (480, 43044344), (490, 42165888), (560, 36895152), (588, 35138240), (640, 32283258), (672, 30745960), (735, 28110592), (768, 26902715), (784, 26353680), (840, 24596768), (896, 23059470), (960, 21522172), (980, 21082944), (1120, 18447576), (1176, 17569120), (1280, 16141629), (1344, 15372980), (1470, 14055296), (1568, 13176840), (1680, 12298384), (1792, 11529735), (1920, 10761086), (1960, 10541472), (2240, 9223788), (2352, 8784560), (2688, 7686490), (2940, 7027648), (3136, 6588420), (3360, 6149192), (3840, 5380543), (3920, 5270736), (4480, 4611894), (4704, 4392280), (5376, 3843245), (5880, 3513824), (6272, 3294210), (6720, 3074596), (7840, 2635368), (8960, 2305947), (9408, 2196140), (11760, 1756912), (12544, 1647105), (13440, 1537298), (15680, 1317684), (18816, 1098070), (23520, 878456), (26880, 768649), (31360, 658842), (37632, 549035), (47040, 439228), (62720, 329421), (94080, 219614), (109807, 188160)]