18987738

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{563}}^1$

素因数の和:659

約数の個数: 64

約数和(自身を含む): 48079872

約数和(自身を除く): 29092134

約数列:

[1, 2, 3, 6, 7, 11, 14, 21, 22, 33, 42, 66, 73, 77, 146, 154, 219, 231, 438, 462, 511, 563, 803, 1022, 1126, 1533, 1606, 1689, 2409, 3066, 3378, 3941, 4818, 5621, 6193, 7882, 11242, 11823, 12386, 16863, 18579, 23646, 33726, 37158, 41099, 43351, 82198, 86702, 123297, 130053, 246594, 260106, 287693, 452089, 575386, 863079, 904178, 1356267, 1726158, 2712534, 3164623, 6329246, 9493869, 18987738]

約数ペア:

[(1, 18987738), (2, 9493869), (3, 6329246), (6, 3164623), (7, 2712534), (11, 1726158), (14, 1356267), (21, 904178), (22, 863079), (33, 575386), (42, 452089), (66, 287693), (73, 260106), (77, 246594), (146, 130053), (154, 123297), (219, 86702), (231, 82198), (438, 43351), (462, 41099), (511, 37158), (563, 33726), (803, 23646), (1022, 18579), (1126, 16863), (1533, 12386), (1606, 11823), (1689, 11242), (2409, 7882), (3066, 6193), (3378, 5621), (3941, 4818)]