21005946

素因数分解:

$2^1\times 3^3\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1301}}^1$

素因数の和:1348

約数の個数: 64

約数和(自身を含む): 52496640

約数和(自身を除く): 31490694

約数列:

[1, 2, 3, 6, 9, 13, 18, 23, 26, 27, 39, 46, 54, 69, 78, 117, 138, 207, 234, 299, 351, 414, 598, 621, 702, 897, 1242, 1301, 1794, 2602, 2691, 3903, 5382, 7806, 8073, 11709, 16146, 16913, 23418, 29923, 33826, 35127, 50739, 59846, 70254, 89769, 101478, 152217, 179538, 269307, 304434, 388999, 456651, 538614, 777998, 807921, 913302, 1166997, 1615842, 2333994, 3500991, 7001982, 10502973, 21005946]

約数ペア:

[(1, 21005946), (2, 10502973), (3, 7001982), (6, 3500991), (9, 2333994), (13, 1615842), (18, 1166997), (23, 913302), (26, 807921), (27, 777998), (39, 538614), (46, 456651), (54, 388999), (69, 304434), (78, 269307), (117, 179538), (138, 152217), (207, 101478), (234, 89769), (299, 70254), (351, 59846), (414, 50739), (598, 35127), (621, 33826), (702, 29923), (897, 23418), (1242, 16913), (1301, 16146), (1794, 11709), (2602, 8073), (2691, 7806), (3903, 5382)]