20817258

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{157}}^1$

素因数の和:228

約数の個数: 96

約数和(自身を含む): 54468288

約数和(自身を除く): 33651030

約数列:

[1, 2, 3, 6, 7, 11, 14, 21, 22, 33, 41, 42, 49, 66, 77, 82, 98, 123, 147, 154, 157, 231, 246, 287, 294, 314, 451, 462, 471, 539, 574, 861, 902, 942, 1078, 1099, 1353, 1617, 1722, 1727, 2009, 2198, 2706, 3157, 3234, 3297, 3454, 4018, 5181, 6027, 6314, 6437, 6594, 7693, 9471, 10362, 12054, 12089, 12874, 15386, 18942, 19311, 22099, 23079, 24178, 36267, 38622, 44198, 45059, 46158, 66297, 70807, 72534, 84623, 90118, 132594, 135177, 141614, 169246, 212421, 253869, 270354, 315413, 424842, 495649, 507738, 630826, 946239, 991298, 1486947, 1892478, 2973894, 3469543, 6939086, 10408629, 20817258]

約数ペア:

[(1, 20817258), (2, 10408629), (3, 6939086), (6, 3469543), (7, 2973894), (11, 1892478), (14, 1486947), (21, 991298), (22, 946239), (33, 630826), (41, 507738), (42, 495649), (49, 424842), (66, 315413), (77, 270354), (82, 253869), (98, 212421), (123, 169246), (147, 141614), (154, 135177), (157, 132594), (231, 90118), (246, 84623), (287, 72534), (294, 70807), (314, 66297), (451, 46158), (462, 45059), (471, 44198), (539, 38622), (574, 36267), (861, 24178), (902, 23079), (942, 22099), (1078, 19311), (1099, 18942), (1353, 15386), (1617, 12874), (1722, 12089), (1727, 12054), (2009, 10362), (2198, 9471), (2706, 7693), (3157, 6594), (3234, 6437), (3297, 6314), (3454, 6027), (4018, 5181)]