21037229960

素因数分解:

$2^3\times 5^1\times {\mathrm{127}}^1\times {\mathrm{4141187}}^1$

素因数の和:4141325

約数の個数: 32

約数和(自身を含む): 47706485760

約数和(自身を除く): 26669255800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 127, 254, 508, 635, 1016, 1270, 2540, 5080, 4141187, 8282374, 16564748, 20705935, 33129496, 41411870, 82823740, 165647480, 525930749, 1051861498, 2103722996, 2629653745, 4207445992, 5259307490, 10518614980, 21037229960]

約数ペア:

[(1, 21037229960), (2, 10518614980), (4, 5259307490), (5, 4207445992), (8, 2629653745), (10, 2103722996), (20, 1051861498), (40, 525930749), (127, 165647480), (254, 82823740), (508, 41411870), (635, 33129496), (1016, 20705935), (1270, 16564748), (2540, 8282374), (5080, 4141187)]