20457160

素因数分解:

$2^3\times 5^1\times {\mathrm{127}}^1\times {\mathrm{4027}}^1$

素因数の和:4165

約数の個数: 32

約数和(自身を含む): 46402560

約数和(自身を除く): 25945400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 127, 254, 508, 635, 1016, 1270, 2540, 4027, 5080, 8054, 16108, 20135, 32216, 40270, 80540, 161080, 511429, 1022858, 2045716, 2557145, 4091432, 5114290, 10228580, 20457160]

約数ペア:

[(1, 20457160), (2, 10228580), (4, 5114290), (5, 4091432), (8, 2557145), (10, 2045716), (20, 1022858), (40, 511429), (127, 161080), (254, 80540), (508, 40270), (635, 32216), (1016, 20135), (1270, 16108), (2540, 8054), (4027, 5080)]