163251640

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{20509}}^1$

素因数の和:20719

約数の個数: 32

約数和(自身を含む): 369180000

約数和(自身を除く): 205928360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 796, 995, 1592, 1990, 3980, 7960, 20509, 41018, 82036, 102545, 164072, 205090, 410180, 820360, 4081291, 8162582, 16325164, 20406455, 32650328, 40812910, 81625820, 163251640]

約数ペア:

[(1, 163251640), (2, 81625820), (4, 40812910), (5, 32650328), (8, 20406455), (10, 16325164), (20, 8162582), (40, 4081291), (199, 820360), (398, 410180), (796, 205090), (995, 164072), (1592, 102545), (1990, 82036), (3980, 41018), (7960, 20509)]