201531280

素因数分解:

$2^4\times 5^1\times {\mathrm{199}}^1\times {\mathrm{12659}}^1$

素因数の和:12871

約数の個数: 40

約数和(自身を含む): 470952000

約数和(自身を除く): 269420720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 199, 398, 796, 995, 1592, 1990, 3184, 3980, 7960, 12659, 15920, 25318, 50636, 63295, 101272, 126590, 202544, 253180, 506360, 1012720, 2519141, 5038282, 10076564, 12595705, 20153128, 25191410, 40306256, 50382820, 100765640, 201531280]

約数ペア:

[(1, 201531280), (2, 100765640), (4, 50382820), (5, 40306256), (8, 25191410), (10, 20153128), (16, 12595705), (20, 10076564), (40, 5038282), (80, 2519141), (199, 1012720), (398, 506360), (796, 253180), (995, 202544), (1592, 126590), (1990, 101272), (3184, 63295), (3980, 50636), (7960, 25318), (12659, 15920)]