20154740

素因数分解:

$2^2\times 5^1\times {\mathrm{223}}^1\times {\mathrm{4519}}^1$

素因数の和:4751

約数の個数: 24

約数和(自身を含む): 42524160

約数和(自身を除く): 22369420

約数列:

[1, 2, 4, 5, 10, 20, 223, 446, 892, 1115, 2230, 4460, 4519, 9038, 18076, 22595, 45190, 90380, 1007737, 2015474, 4030948, 5038685, 10077370, 20154740]

約数ペア:

[(1, 20154740), (2, 10077370), (4, 5038685), (5, 4030948), (10, 2015474), (20, 1007737), (223, 90380), (446, 45190), (892, 22595), (1115, 18076), (2230, 9038), (4460, 4519)]