31351455

素因数分解:

$3^4\times 5^1\times {\mathrm{199}}^1\times {\mathrm{389}}^1$

素因数の和:605

約数の個数: 40

約数和(自身を含む): 56628000

約数和(自身を除く): 25276545

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 199, 389, 405, 597, 995, 1167, 1791, 1945, 2985, 3501, 5373, 5835, 8955, 10503, 16119, 17505, 26865, 31509, 52515, 77411, 80595, 157545, 232233, 387055, 696699, 1161165, 2090097, 3483495, 6270291, 10450485, 31351455]

約数ペア:

[(1, 31351455), (3, 10450485), (5, 6270291), (9, 3483495), (15, 2090097), (27, 1161165), (45, 696699), (81, 387055), (135, 232233), (199, 157545), (389, 80595), (405, 77411), (597, 52515), (995, 31509), (1167, 26865), (1791, 17505), (1945, 16119), (2985, 10503), (3501, 8955), (5373, 5835)]