5643640

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{709}}^1$

素因数の和:919

約数の個数: 32

約数和(自身を含む): 12780000

約数和(自身を除く): 7136360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 709, 796, 995, 1418, 1592, 1990, 2836, 3545, 3980, 5672, 7090, 7960, 14180, 28360, 141091, 282182, 564364, 705455, 1128728, 1410910, 2821820, 5643640]

約数ペア:

[(1, 5643640), (2, 2821820), (4, 1410910), (5, 1128728), (8, 705455), (10, 564364), (20, 282182), (40, 141091), (199, 28360), (398, 14180), (709, 7960), (796, 7090), (995, 5672), (1418, 3980), (1592, 3545), (1990, 2836)]