20651360

素因数分解:

$2^5\times 5^1\times {\mathrm{337}}^1\times {\mathrm{383}}^1$

素因数の和:735

約数の個数: 48

約数和(自身を含む): 49061376

約数和(自身を除く): 28410016

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 337, 383, 674, 766, 1348, 1532, 1685, 1915, 2696, 3064, 3370, 3830, 5392, 6128, 6740, 7660, 10784, 12256, 13480, 15320, 26960, 30640, 53920, 61280, 129071, 258142, 516284, 645355, 1032568, 1290710, 2065136, 2581420, 4130272, 5162840, 10325680, 20651360]

約数ペア:

[(1, 20651360), (2, 10325680), (4, 5162840), (5, 4130272), (8, 2581420), (10, 2065136), (16, 1290710), (20, 1032568), (32, 645355), (40, 516284), (80, 258142), (160, 129071), (337, 61280), (383, 53920), (674, 30640), (766, 26960), (1348, 15320), (1532, 13480), (1685, 12256), (1915, 10784), (2696, 7660), (3064, 6740), (3370, 6128), (3830, 5392)]