8103280

素因数分解:

$2^4\times 5^1\times {\mathrm{199}}^1\times {\mathrm{509}}^1$

素因数の和:721

約数の個数: 40

約数和(自身を含む): 18972000

約数和(自身を除く): 10868720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 199, 398, 509, 796, 995, 1018, 1592, 1990, 2036, 2545, 3184, 3980, 4072, 5090, 7960, 8144, 10180, 15920, 20360, 40720, 101291, 202582, 405164, 506455, 810328, 1012910, 1620656, 2025820, 4051640, 8103280]

約数ペア:

[(1, 8103280), (2, 4051640), (4, 2025820), (5, 1620656), (8, 1012910), (10, 810328), (16, 506455), (20, 405164), (40, 202582), (80, 101291), (199, 40720), (398, 20360), (509, 15920), (796, 10180), (995, 8144), (1018, 7960), (1592, 5090), (1990, 4072), (2036, 3980), (2545, 3184)]