660680

素因数分解:

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

素因数の和:293

約数の個数: 32

約数和(自身を含む): 1512000

約数和(自身を除く): 851320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 166, 199, 332, 398, 415, 664, 796, 830, 995, 1592, 1660, 1990, 3320, 3980, 7960, 16517, 33034, 66068, 82585, 132136, 165170, 330340, 660680]

約数ペア:

[(1, 660680), (2, 330340), (4, 165170), (5, 132136), (8, 82585), (10, 66068), (20, 33034), (40, 16517), (83, 7960), (166, 3980), (199, 3320), (332, 1990), (398, 1660), (415, 1592), (664, 995), (796, 830)]