64432220

素因数分解:

$2^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{16189}}^1$

素因数の和:16397

約数の個数: 24

約数和(自身を含む): 135996000

約数和(自身を除く): 71563780

約数列:

[1, 2, 4, 5, 10, 20, 199, 398, 796, 995, 1990, 3980, 16189, 32378, 64756, 80945, 161890, 323780, 3221611, 6443222, 12886444, 16108055, 32216110, 64432220]

約数ペア:

[(1, 64432220), (2, 32216110), (4, 16108055), (5, 12886444), (10, 6443222), (20, 3221611), (199, 323780), (398, 161890), (796, 80945), (995, 64756), (1990, 32378), (3980, 16189)]