18657675

素因数分解:

$3^3\times 5^2\times {\mathrm{131}}^1\times {\mathrm{211}}^1$

素因数の和:361

約数の個数: 48

約数和(自身を含む): 34700160

約数和(自身を除く): 16042485

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 131, 135, 211, 225, 393, 633, 655, 675, 1055, 1179, 1899, 1965, 3165, 3275, 3537, 5275, 5697, 5895, 9495, 9825, 15825, 17685, 27641, 28485, 29475, 47475, 82923, 88425, 138205, 142425, 248769, 414615, 691025, 746307, 1243845, 2073075, 3731535, 6219225, 18657675]

約数ペア:

[(1, 18657675), (3, 6219225), (5, 3731535), (9, 2073075), (15, 1243845), (25, 746307), (27, 691025), (45, 414615), (75, 248769), (131, 142425), (135, 138205), (211, 88425), (225, 82923), (393, 47475), (633, 29475), (655, 28485), (675, 27641), (1055, 17685), (1179, 15825), (1899, 9825), (1965, 9495), (3165, 5895), (3275, 5697), (3537, 5275)]