21643356

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{191}}^1$

素因数の和:295

約数の個数: 96

約数和(自身を含む): 61931520

約数和(自身を除く): 40288164

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 19, 21, 28, 38, 42, 57, 71, 76, 84, 114, 133, 142, 191, 213, 228, 266, 284, 382, 399, 426, 497, 532, 573, 764, 798, 852, 994, 1146, 1337, 1349, 1491, 1596, 1988, 2292, 2674, 2698, 2982, 3629, 4011, 4047, 5348, 5396, 5964, 7258, 8022, 8094, 9443, 10887, 13561, 14516, 16044, 16188, 18886, 21774, 25403, 27122, 28329, 37772, 40683, 43548, 50806, 54244, 56658, 76209, 81366, 94927, 101612, 113316, 152418, 162732, 189854, 257659, 284781, 304836, 379708, 515318, 569562, 772977, 1030636, 1139124, 1545954, 1803613, 3091908, 3607226, 5410839, 7214452, 10821678, 21643356]

約数ペア:

[(1, 21643356), (2, 10821678), (3, 7214452), (4, 5410839), (6, 3607226), (7, 3091908), (12, 1803613), (14, 1545954), (19, 1139124), (21, 1030636), (28, 772977), (38, 569562), (42, 515318), (57, 379708), (71, 304836), (76, 284781), (84, 257659), (114, 189854), (133, 162732), (142, 152418), (191, 113316), (213, 101612), (228, 94927), (266, 81366), (284, 76209), (382, 56658), (399, 54244), (426, 50806), (497, 43548), (532, 40683), (573, 37772), (764, 28329), (798, 27122), (852, 25403), (994, 21774), (1146, 18886), (1337, 16188), (1349, 16044), (1491, 14516), (1596, 13561), (1988, 10887), (2292, 9443), (2674, 8094), (2698, 8022), (2982, 7258), (3629, 5964), (4011, 5396), (4047, 5348)]