398429540

素因数分解:

$2^2\times 5^1\times {\mathrm{521}}^1\times {\mathrm{38237}}^1$

素因数の和:38767

約数の個数: 24

約数和(自身を含む): 838329912

約数和(自身を除く): 439900372

約数列:

[1, 2, 4, 5, 10, 20, 521, 1042, 2084, 2605, 5210, 10420, 38237, 76474, 152948, 191185, 382370, 764740, 19921477, 39842954, 79685908, 99607385, 199214770, 398429540]

約数ペア:

[(1, 398429540), (2, 199214770), (4, 99607385), (5, 79685908), (10, 39842954), (20, 19921477), (521, 764740), (1042, 382370), (2084, 191185), (2605, 152948), (5210, 76474), (10420, 38237)]