90166900

素因数分解:

$2^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{197}}^1\times {\mathrm{199}}^1$

素因数の和:433

約数の個数: 72

約数和(自身を含む): 206236800

約数和(自身を除く): 116069900

約数列:

[1, 2, 4, 5, 10, 20, 23, 25, 46, 50, 92, 100, 115, 197, 199, 230, 394, 398, 460, 575, 788, 796, 985, 995, 1150, 1970, 1990, 2300, 3940, 3980, 4531, 4577, 4925, 4975, 9062, 9154, 9850, 9950, 18124, 18308, 19700, 19900, 22655, 22885, 39203, 45310, 45770, 78406, 90620, 91540, 113275, 114425, 156812, 196015, 226550, 228850, 392030, 453100, 457700, 784060, 901669, 980075, 1803338, 1960150, 3606676, 3920300, 4508345, 9016690, 18033380, 22541725, 45083450, 90166900]

約数ペア:

[(1, 90166900), (2, 45083450), (4, 22541725), (5, 18033380), (10, 9016690), (20, 4508345), (23, 3920300), (25, 3606676), (46, 1960150), (50, 1803338), (92, 980075), (100, 901669), (115, 784060), (197, 457700), (199, 453100), (230, 392030), (394, 228850), (398, 226550), (460, 196015), (575, 156812), (788, 114425), (796, 113275), (985, 91540), (995, 90620), (1150, 78406), (1970, 45770), (1990, 45310), (2300, 39203), (3940, 22885), (3980, 22655), (4531, 19900), (4577, 19700), (4925, 18308), (4975, 18124), (9062, 9950), (9154, 9850)]