80194760

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{10177}}^1$

素因数の和:10385

約数の個数: 32

約数和(自身を含む): 181371960

約数和(自身を除く): 101177200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 394, 788, 985, 1576, 1970, 3940, 7880, 10177, 20354, 40708, 50885, 81416, 101770, 203540, 407080, 2004869, 4009738, 8019476, 10024345, 16038952, 20048690, 40097380, 80194760]

約数ペア:

[(1, 80194760), (2, 40097380), (4, 20048690), (5, 16038952), (8, 10024345), (10, 8019476), (20, 4009738), (40, 2004869), (197, 407080), (394, 203540), (788, 101770), (985, 81416), (1576, 50885), (1970, 40708), (3940, 20354), (7880, 10177)]