39406420

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{27751}}^1$

素因数の和:27831

約数の個数: 24

約数和(自身を含む): 83922048

約数和(自身を除く): 44515628

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 27751, 55502, 111004, 138755, 277510, 555020, 1970321, 3940642, 7881284, 9851605, 19703210, 39406420]

約数ペア:

[(1, 39406420), (2, 19703210), (4, 9851605), (5, 7881284), (10, 3940642), (20, 1970321), (71, 555020), (142, 277510), (284, 138755), (355, 111004), (710, 55502), (1420, 27751)]