3956880020

素因数分解:

$2^2\times 5^1\times {\mathrm{307}}^1\times {\mathrm{644443}}^1$

素因数の和:644759

約数の個数: 24

約数和(自身を含む): 8336527584

約数和(自身を除く): 4379647564

約数列:

[1, 2, 4, 5, 10, 20, 307, 614, 1228, 1535, 3070, 6140, 644443, 1288886, 2577772, 3222215, 6444430, 12888860, 197844001, 395688002, 791376004, 989220005, 1978440010, 3956880020]

約数ペア:

[(1, 3956880020), (2, 1978440010), (4, 989220005), (5, 791376004), (10, 395688002), (20, 197844001), (307, 12888860), (614, 6444430), (1228, 3222215), (1535, 2577772), (3070, 1288886), (6140, 644443)]