20108739

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1$

素因数の和:160

約数の個数: 64

約数和(自身を含む): 35389440

約数和(自身を除く): 15280701

約数列:

[1, 3, 7, 17, 21, 23, 31, 51, 69, 79, 93, 119, 161, 217, 237, 357, 391, 483, 527, 553, 651, 713, 1173, 1343, 1581, 1659, 1817, 2139, 2449, 2737, 3689, 4029, 4991, 5451, 7347, 8211, 9401, 11067, 12121, 12719, 14973, 17143, 28203, 30889, 36363, 38157, 41633, 51429, 56327, 84847, 92667, 124899, 168981, 216223, 254541, 291431, 394289, 648669, 874293, 957559, 1182867, 2872677, 6702913, 20108739]

約数ペア:

[(1, 20108739), (3, 6702913), (7, 2872677), (17, 1182867), (21, 957559), (23, 874293), (31, 648669), (51, 394289), (69, 291431), (79, 254541), (93, 216223), (119, 168981), (161, 124899), (217, 92667), (237, 84847), (357, 56327), (391, 51429), (483, 41633), (527, 38157), (553, 36363), (651, 30889), (713, 28203), (1173, 17143), (1343, 14973), (1581, 12719), (1659, 12121), (1817, 11067), (2139, 9401), (2449, 8211), (2737, 7347), (3689, 5451), (4029, 4991)]