81670260

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{27779}}^1$

素因数の和:27805

約数の個数: 72

約数和(自身を含む): 266021280

約数和(自身を除く): 184351020

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 27779, 55558, 83337, 111116, 138895, 166674, 194453, 277790, 333348, 388906, 416685, 555580, 583359, 777812, 833370, 972265, 1166718, 1361171, 1666740, 1944530, 2333436, 2722342, 2916795, 3889060, 4083513, 5444684, 5833590, 6805855, 8167026, 11667180, 13611710, 16334052, 20417565, 27223420, 40835130, 81670260]

約数ペア:

[(1, 81670260), (2, 40835130), (3, 27223420), (4, 20417565), (5, 16334052), (6, 13611710), (7, 11667180), (10, 8167026), (12, 6805855), (14, 5833590), (15, 5444684), (20, 4083513), (21, 3889060), (28, 2916795), (30, 2722342), (35, 2333436), (42, 1944530), (49, 1666740), (60, 1361171), (70, 1166718), (84, 972265), (98, 833370), (105, 777812), (140, 583359), (147, 555580), (196, 416685), (210, 388906), (245, 333348), (294, 277790), (420, 194453), (490, 166674), (588, 138895), (735, 111116), (980, 83337), (1470, 55558), (2940, 27779)]