19541800

素因数分解:

$2^3\times 5^2\times {\mathrm{199}}^1\times {\mathrm{491}}^1$

素因数の和:706

約数の個数: 48

約数和(自身を含む): 45756000

約数和(自身を除く): 26214200

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 199, 200, 398, 491, 796, 982, 995, 1592, 1964, 1990, 2455, 3928, 3980, 4910, 4975, 7960, 9820, 9950, 12275, 19640, 19900, 24550, 39800, 49100, 97709, 98200, 195418, 390836, 488545, 781672, 977090, 1954180, 2442725, 3908360, 4885450, 9770900, 19541800]

約数ペア:

[(1, 19541800), (2, 9770900), (4, 4885450), (5, 3908360), (8, 2442725), (10, 1954180), (20, 977090), (25, 781672), (40, 488545), (50, 390836), (100, 195418), (199, 98200), (200, 97709), (398, 49100), (491, 39800), (796, 24550), (982, 19900), (995, 19640), (1592, 12275), (1964, 9950), (1990, 9820), (2455, 7960), (3928, 4975), (3980, 4910)]