20628548640

素因数分解:

$2^5\times 3^4\times 5^1\times 7^1\times {\mathrm{227387}}^1$

素因数の和:227421

約数の個数: 240

約数和(自身を含む): 83202178752

約数和(自身を除く): 62573630112

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 27, 28, 30, 32, 35, 36, 40, 42, 45, 48, 54, 56, 60, 63, 70, 72, 80, 81, 84, 90, 96, 105, 108, 112, 120, 126, 135, 140, 144, 160, 162, 168, 180, 189, 210, 216, 224, 240, 252, 270, 280, 288, 315, 324, 336, 360, 378, 405, 420, 432, 480, 504, 540, 560, 567, 630, 648, 672, 720, 756, 810, 840, 864, 945, 1008, 1080, 1120, 1134, 1260, 1296, 1440, 1512, 1620, 1680, 1890, 2016, 2160, 2268, 2520, 2592, 2835, 3024, 3240, 3360, 3780, 4320, 4536, 5040, 5670, 6048, 6480, 7560, 9072, 10080, 11340, 12960, 15120, 18144, 22680, 30240, 45360, 90720, 227387, 454774, 682161, 909548, 1136935, 1364322, 1591709, 1819096, 2046483, 2273870, 2728644, 3183418, 3410805, 3638192, 4092966, 4547740, 4775127, 5457288, 6139449, 6366836, 6821610, 7276384, 7958545, 8185932, 9095480, 9550254, 10232415, 10914576, 12278898, 12733672, 13643220, 14325381, 15917090, 16371864, 18190960, 18418347, 19100508, 20464830, 21829152, 23875635, 24557796, 25467344, 27286440, 28650762, 30697245, 31834180, 32743728, 36381920, 36836694, 38201016, 40929660, 42976143, 47751270, 49115592, 50934688, 54572880, 57301524, 61394490, 63668360, 65487456, 71626905, 73673388, 76402032, 81859320, 85952286, 92091735, 95502540, 98231184, 109145760, 114603048, 122788980, 127336720, 128928429, 143253810, 147346776, 152804064, 163718640, 171904572, 184183470, 191005080, 196462368, 214880715, 229206096, 245577960, 254673440, 257856858, 286507620, 294693552, 327437280, 343809144, 368366940, 382010160, 429761430, 458412192, 491155920, 515713716, 573015240, 589387104, 644642145, 687618288, 736733880, 764020320, 859522860, 982311840, 1031427432, 1146030480, 1289284290, 1375236576, 1473467760, 1719045720, 2062854864, 2292060960, 2578568580, 2946935520, 3438091440, 4125709728, 5157137160, 6876182880, 10314274320, 20628548640]

約数ペア:

[(1, 20628548640), (2, 10314274320), (3, 6876182880), (4, 5157137160), (5, 4125709728), (6, 3438091440), (7, 2946935520), (8, 2578568580), (9, 2292060960), (10, 2062854864), (12, 1719045720), (14, 1473467760), (15, 1375236576), (16, 1289284290), (18, 1146030480), (20, 1031427432), (21, 982311840), (24, 859522860), (27, 764020320), (28, 736733880), (30, 687618288), (32, 644642145), (35, 589387104), (36, 573015240), (40, 515713716), (42, 491155920), (45, 458412192), (48, 429761430), (54, 382010160), (56, 368366940), (60, 343809144), (63, 327437280), (70, 294693552), (72, 286507620), (80, 257856858), (81, 254673440), (84, 245577960), (90, 229206096), (96, 214880715), (105, 196462368), (108, 191005080), (112, 184183470), (120, 171904572), (126, 163718640), (135, 152804064), (140, 147346776), (144, 143253810), (160, 128928429), (162, 127336720), (168, 122788980), (180, 114603048), (189, 109145760), (210, 98231184), (216, 95502540), (224, 92091735), (240, 85952286), (252, 81859320), (270, 76402032), (280, 73673388), (288, 71626905), (315, 65487456), (324, 63668360), (336, 61394490), (360, 57301524), (378, 54572880), (405, 50934688), (420, 49115592), (432, 47751270), (480, 42976143), (504, 40929660), (540, 38201016), (560, 36836694), (567, 36381920), (630, 32743728), (648, 31834180), (672, 30697245), (720, 28650762), (756, 27286440), (810, 25467344), (840, 24557796), (864, 23875635), (945, 21829152), (1008, 20464830), (1080, 19100508), (1120, 18418347), (1134, 18190960), (1260, 16371864), (1296, 15917090), (1440, 14325381), (1512, 13643220), (1620, 12733672), (1680, 12278898), (1890, 10914576), (2016, 10232415), (2160, 9550254), (2268, 9095480), (2520, 8185932), (2592, 7958545), (2835, 7276384), (3024, 6821610), (3240, 6366836), (3360, 6139449), (3780, 5457288), (4320, 4775127), (4536, 4547740), (5040, 4092966), (5670, 3638192), (6048, 3410805), (6480, 3183418), (7560, 2728644), (9072, 2273870), (10080, 2046483), (11340, 1819096), (12960, 1591709), (15120, 1364322), (18144, 1136935), (22680, 909548), (30240, 682161), (45360, 454774), (90720, 227387)]