66728680

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{101}}^1\times {\mathrm{199}}^1$

素因数の和:394

約数の個数: 64

約数和(自身を含む): 154224000

約数和(自身を除く): 87495320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 101, 166, 199, 202, 332, 398, 404, 415, 505, 664, 796, 808, 830, 995, 1010, 1592, 1660, 1990, 2020, 3320, 3980, 4040, 7960, 8383, 16517, 16766, 20099, 33034, 33532, 40198, 41915, 66068, 67064, 80396, 82585, 83830, 100495, 132136, 160792, 165170, 167660, 200990, 330340, 335320, 401980, 660680, 803960, 1668217, 3336434, 6672868, 8341085, 13345736, 16682170, 33364340, 66728680]

約数ペア:

[(1, 66728680), (2, 33364340), (4, 16682170), (5, 13345736), (8, 8341085), (10, 6672868), (20, 3336434), (40, 1668217), (83, 803960), (101, 660680), (166, 401980), (199, 335320), (202, 330340), (332, 200990), (398, 167660), (404, 165170), (415, 160792), (505, 132136), (664, 100495), (796, 83830), (808, 82585), (830, 80396), (995, 67064), (1010, 66068), (1592, 41915), (1660, 40198), (1990, 33532), (2020, 33034), (3320, 20099), (3980, 16766), (4040, 16517), (7960, 8383)]