71393240

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{8969}}^1$

素因数の和:9179

約数の個数: 32

約数和(自身を含む): 161460000

約数和(自身を除く): 90066760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 796, 995, 1592, 1990, 3980, 7960, 8969, 17938, 35876, 44845, 71752, 89690, 179380, 358760, 1784831, 3569662, 7139324, 8924155, 14278648, 17848310, 35696620, 71393240]

約数ペア:

[(1, 71393240), (2, 35696620), (4, 17848310), (5, 14278648), (8, 8924155), (10, 7139324), (20, 3569662), (40, 1784831), (199, 358760), (398, 179380), (796, 89690), (995, 71752), (1592, 44845), (1990, 35876), (3980, 17938), (7960, 8969)]