20457080

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{73061}}^1$

素因数の和:73079

約数の個数: 32

約数和(自身を含む): 52604640

約数和(自身を除く): 32147560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 73061, 146122, 292244, 365305, 511427, 584488, 730610, 1022854, 1461220, 2045708, 2557135, 2922440, 4091416, 5114270, 10228540, 20457080]

約数ペア:

[(1, 20457080), (2, 10228540), (4, 5114270), (5, 4091416), (7, 2922440), (8, 2557135), (10, 2045708), (14, 1461220), (20, 1022854), (28, 730610), (35, 584488), (40, 511427), (56, 365305), (70, 292244), (140, 146122), (280, 73061)]