28495640

素因数分解:

$2^3\times 5^1\times {\mathrm{347}}^1\times {\mathrm{2053}}^1$

素因数の和:2411

約数の個数: 32

約数和(自身を含む): 64331280

約数和(自身を除く): 35835640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 347, 694, 1388, 1735, 2053, 2776, 3470, 4106, 6940, 8212, 10265, 13880, 16424, 20530, 41060, 82120, 712391, 1424782, 2849564, 3561955, 5699128, 7123910, 14247820, 28495640]

約数ペア:

[(1, 28495640), (2, 14247820), (4, 7123910), (5, 5699128), (8, 3561955), (10, 2849564), (20, 1424782), (40, 712391), (347, 82120), (694, 41060), (1388, 20530), (1735, 16424), (2053, 13880), (2776, 10265), (3470, 8212), (4106, 6940)]