21020118

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1$

素因数の和:162

約数の個数: 96

約数和(自身を含む): 53187840

約数和(自身を除く): 32167722

約数列:

[1, 2, 3, 6, 7, 14, 19, 21, 38, 42, 49, 53, 57, 71, 98, 106, 114, 133, 142, 147, 159, 213, 266, 294, 318, 371, 399, 426, 497, 742, 798, 931, 994, 1007, 1113, 1349, 1491, 1862, 2014, 2226, 2597, 2698, 2793, 2982, 3021, 3479, 3763, 4047, 5194, 5586, 6042, 6958, 7049, 7526, 7791, 8094, 9443, 10437, 11289, 14098, 15582, 18886, 20874, 21147, 22578, 26341, 28329, 42294, 49343, 52682, 56658, 66101, 71497, 79023, 98686, 132202, 142994, 148029, 158046, 184387, 198303, 214491, 296058, 368774, 396606, 428982, 500479, 553161, 1000958, 1106322, 1501437, 3002874, 3503353, 7006706, 10510059, 21020118]

約数ペア:

[(1, 21020118), (2, 10510059), (3, 7006706), (6, 3503353), (7, 3002874), (14, 1501437), (19, 1106322), (21, 1000958), (38, 553161), (42, 500479), (49, 428982), (53, 396606), (57, 368774), (71, 296058), (98, 214491), (106, 198303), (114, 184387), (133, 158046), (142, 148029), (147, 142994), (159, 132202), (213, 98686), (266, 79023), (294, 71497), (318, 66101), (371, 56658), (399, 52682), (426, 49343), (497, 42294), (742, 28329), (798, 26341), (931, 22578), (994, 21147), (1007, 20874), (1113, 18886), (1349, 15582), (1491, 14098), (1862, 11289), (2014, 10437), (2226, 9443), (2597, 8094), (2698, 7791), (2793, 7526), (2982, 7049), (3021, 6958), (3479, 6042), (3763, 5586), (4047, 5194)]