18682120

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{2347}}^1$

素因数の和:2557

約数の個数: 32

約数和(自身を含む): 42264000

約数和(自身を除く): 23581880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 796, 995, 1592, 1990, 2347, 3980, 4694, 7960, 9388, 11735, 18776, 23470, 46940, 93880, 467053, 934106, 1868212, 2335265, 3736424, 4670530, 9341060, 18682120]

約数ペア:

[(1, 18682120), (2, 9341060), (4, 4670530), (5, 3736424), (8, 2335265), (10, 1868212), (20, 934106), (40, 467053), (199, 93880), (398, 46940), (796, 23470), (995, 18776), (1592, 11735), (1990, 9388), (2347, 7960), (3980, 4694)]