28905860

素因数分解:

$2^2\times 5^1\times {\mathrm{421}}^1\times {\mathrm{3433}}^1$

素因数の和:3863

約数の個数: 24

約数和(自身を含む): 60864216

約数和(自身を除く): 31958356

約数列:

[1, 2, 4, 5, 10, 20, 421, 842, 1684, 2105, 3433, 4210, 6866, 8420, 13732, 17165, 34330, 68660, 1445293, 2890586, 5781172, 7226465, 14452930, 28905860]

約数ペア:

[(1, 28905860), (2, 14452930), (4, 7226465), (5, 5781172), (10, 2890586), (20, 1445293), (421, 68660), (842, 34330), (1684, 17165), (2105, 13732), (3433, 8420), (4210, 6866)]