20218618900

素因数分解:

$2^2\times 5^2\times {\mathrm{199}}^1\times {\mathrm{1016011}}^1$

素因数の和:1016224

約数の個数: 36

約数和(自身を含む): 44094920800

約数和(自身を除く): 23876301900

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 199, 398, 796, 995, 1990, 3980, 4975, 9950, 19900, 1016011, 2032022, 4064044, 5080055, 10160110, 20320220, 25400275, 50800550, 101601100, 202186189, 404372378, 808744756, 1010930945, 2021861890, 4043723780, 5054654725, 10109309450, 20218618900]

約数ペア:

[(1, 20218618900), (2, 10109309450), (4, 5054654725), (5, 4043723780), (10, 2021861890), (20, 1010930945), (25, 808744756), (50, 404372378), (100, 202186189), (199, 101601100), (398, 50800550), (796, 25400275), (995, 20320220), (1990, 10160110), (3980, 5080055), (4975, 4064044), (9950, 2032022), (19900, 1016011)]