21004956

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{107}}^1$

素因数の和:184

約数の個数: 144

約数和(自身を含む): 66044160

約数和(自身を除く): 45039204

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 19, 21, 28, 36, 38, 41, 42, 57, 63, 76, 82, 84, 107, 114, 123, 126, 133, 164, 171, 214, 228, 246, 252, 266, 287, 321, 342, 369, 399, 428, 492, 532, 574, 642, 684, 738, 749, 779, 798, 861, 963, 1148, 1197, 1284, 1476, 1498, 1558, 1596, 1722, 1926, 2033, 2247, 2337, 2394, 2583, 2996, 3116, 3444, 3852, 4066, 4387, 4494, 4674, 4788, 5166, 5453, 6099, 6741, 7011, 8132, 8774, 8988, 9348, 10332, 10906, 12198, 13161, 13482, 14022, 14231, 16359, 17548, 18297, 21812, 24396, 26322, 26964, 28044, 28462, 30709, 32718, 36594, 39483, 42693, 49077, 52644, 56924, 61418, 65436, 73188, 78966, 83353, 85386, 92127, 98154, 122836, 128079, 157932, 166706, 170772, 184254, 196308, 250059, 256158, 276381, 333412, 368508, 500118, 512316, 552762, 583471, 750177, 1000236, 1105524, 1166942, 1500354, 1750413, 2333884, 3000708, 3500826, 5251239, 7001652, 10502478, 21004956]

約数ペア:

[(1, 21004956), (2, 10502478), (3, 7001652), (4, 5251239), (6, 3500826), (7, 3000708), (9, 2333884), (12, 1750413), (14, 1500354), (18, 1166942), (19, 1105524), (21, 1000236), (28, 750177), (36, 583471), (38, 552762), (41, 512316), (42, 500118), (57, 368508), (63, 333412), (76, 276381), (82, 256158), (84, 250059), (107, 196308), (114, 184254), (123, 170772), (126, 166706), (133, 157932), (164, 128079), (171, 122836), (214, 98154), (228, 92127), (246, 85386), (252, 83353), (266, 78966), (287, 73188), (321, 65436), (342, 61418), (369, 56924), (399, 52644), (428, 49077), (492, 42693), (532, 39483), (574, 36594), (642, 32718), (684, 30709), (738, 28462), (749, 28044), (779, 26964), (798, 26322), (861, 24396), (963, 21812), (1148, 18297), (1197, 17548), (1284, 16359), (1476, 14231), (1498, 14022), (1558, 13482), (1596, 13161), (1722, 12198), (1926, 10906), (2033, 10332), (2247, 9348), (2337, 8988), (2394, 8774), (2583, 8132), (2996, 7011), (3116, 6741), (3444, 6099), (3852, 5453), (4066, 5166), (4387, 4788), (4494, 4674)]