64850120

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{8147}}^1$

素因数の和:8357

約数の個数: 32

約数和(自身を含む): 146664000

約数和(自身を除く): 81813880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 796, 995, 1592, 1990, 3980, 7960, 8147, 16294, 32588, 40735, 65176, 81470, 162940, 325880, 1621253, 3242506, 6485012, 8106265, 12970024, 16212530, 32425060, 64850120]

約数ペア:

[(1, 64850120), (2, 32425060), (4, 16212530), (5, 12970024), (8, 8106265), (10, 6485012), (20, 3242506), (40, 1621253), (199, 325880), (398, 162940), (796, 81470), (995, 65176), (1592, 40735), (1990, 32588), (3980, 16294), (7960, 8147)]