28785940

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{10987}}^1$

素因数の和:11127

約数の個数: 24

約数和(自身を含む): 60917472

約数和(自身を除く): 32131532

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 10987, 21974, 43948, 54935, 109870, 219740, 1439297, 2878594, 5757188, 7196485, 14392970, 28785940]

約数ペア:

[(1, 28785940), (2, 14392970), (4, 7196485), (5, 5757188), (10, 2878594), (20, 1439297), (131, 219740), (262, 109870), (524, 54935), (655, 43948), (1310, 21974), (2620, 10987)]