21295974

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{83}}^1\times {\mathrm{149}}^1$

素因数の和:285

約数の個数: 64

約数和(自身を含む): 50803200

約数和(自身を除く): 29507226

約数列:

[1, 2, 3, 6, 7, 14, 21, 41, 42, 82, 83, 123, 149, 166, 246, 249, 287, 298, 447, 498, 574, 581, 861, 894, 1043, 1162, 1722, 1743, 2086, 3129, 3403, 3486, 6109, 6258, 6806, 10209, 12218, 12367, 18327, 20418, 23821, 24734, 36654, 37101, 42763, 47642, 71463, 74202, 85526, 86569, 128289, 142926, 173138, 256578, 259707, 507047, 519414, 1014094, 1521141, 3042282, 3549329, 7098658, 10647987, 21295974]

約数ペア:

[(1, 21295974), (2, 10647987), (3, 7098658), (6, 3549329), (7, 3042282), (14, 1521141), (21, 1014094), (41, 519414), (42, 507047), (82, 259707), (83, 256578), (123, 173138), (149, 142926), (166, 128289), (246, 86569), (249, 85526), (287, 74202), (298, 71463), (447, 47642), (498, 42763), (574, 37101), (581, 36654), (861, 24734), (894, 23821), (1043, 20418), (1162, 18327), (1722, 12367), (1743, 12218), (2086, 10209), (3129, 6806), (3403, 6258), (3486, 6109)]