80706440

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{10139}}^1$

素因数の和:10349

約数の個数: 32

約数和(自身を含む): 182520000

約数和(自身を除く): 101813560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 796, 995, 1592, 1990, 3980, 7960, 10139, 20278, 40556, 50695, 81112, 101390, 202780, 405560, 2017661, 4035322, 8070644, 10088305, 16141288, 20176610, 40353220, 80706440]

約数ペア:

[(1, 80706440), (2, 40353220), (4, 20176610), (5, 16141288), (8, 10088305), (10, 8070644), (20, 4035322), (40, 2017661), (199, 405560), (398, 202780), (796, 101390), (995, 81112), (1592, 50695), (1990, 40556), (3980, 20278), (7960, 10139)]