178268540

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{2137}}^1$

素因数の和:2286

約数の個数: 48

約数和(自身を含む): 387200352

約数和(自身を除く): 208931812

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 97, 172, 194, 215, 388, 430, 485, 860, 970, 1940, 2137, 4171, 4274, 8342, 8548, 10685, 16684, 20855, 21370, 41710, 42740, 83420, 91891, 183782, 207289, 367564, 414578, 459455, 829156, 918910, 1036445, 1837820, 2072890, 4145780, 8913427, 17826854, 35653708, 44567135, 89134270, 178268540]

約数ペア:

[(1, 178268540), (2, 89134270), (4, 44567135), (5, 35653708), (10, 17826854), (20, 8913427), (43, 4145780), (86, 2072890), (97, 1837820), (172, 1036445), (194, 918910), (215, 829156), (388, 459455), (430, 414578), (485, 367564), (860, 207289), (970, 183782), (1940, 91891), (2137, 83420), (4171, 42740), (4274, 41710), (8342, 21370), (8548, 20855), (10685, 16684)]