131475320

素因数分解:

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

素因数の和:492

約数の個数: 48

約数和(自身を含む): 300895560

約数和(自身を除く): 169420240

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, 39601, 66068, 79202, 82585, 132136, 158404, 165170, 198005, 316808, 330340, 396010, 660680, 792020, 1584040, 3286883, 6573766, 13147532, 16434415, 26295064, 32868830, 65737660, 131475320]

約数ペア:

[(1, 131475320), (2, 65737660), (4, 32868830), (5, 26295064), (8, 16434415), (10, 13147532), (20, 6573766), (40, 3286883), (83, 1584040), (166, 792020), (199, 660680), (332, 396010), (398, 330340), (415, 316808), (664, 198005), (796, 165170), (830, 158404), (995, 132136), (1592, 82585), (1660, 79202), (1990, 66068), (3320, 39601), (3980, 33034), (7960, 16517)]