20912073

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{353}}^1$

素因数の和:414

約数の個数: 48

約数和(自身を含む): 36158976

約数和(自身を除く): 15246903

約数列:

[1, 3, 7, 13, 21, 31, 39, 49, 91, 93, 147, 217, 273, 353, 403, 637, 651, 1059, 1209, 1519, 1911, 2471, 2821, 4557, 4589, 7413, 8463, 10943, 13767, 17297, 19747, 32123, 32829, 51891, 59241, 76601, 96369, 142259, 224861, 229803, 426777, 536207, 674583, 995813, 1608621, 2987439, 6970691, 20912073]

約数ペア:

[(1, 20912073), (3, 6970691), (7, 2987439), (13, 1608621), (21, 995813), (31, 674583), (39, 536207), (49, 426777), (91, 229803), (93, 224861), (147, 142259), (217, 96369), (273, 76601), (353, 59241), (403, 51891), (637, 32829), (651, 32123), (1059, 19747), (1209, 17297), (1519, 13767), (1911, 10943), (2471, 8463), (2821, 7413), (4557, 4589)]