28904620

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{13259}}^1$

素因数の和:13377

約数の個数: 24

約数和(自身を含む): 61261200

約数和(自身を除く): 32356580

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 13259, 26518, 53036, 66295, 132590, 265180, 1445231, 2890462, 5780924, 7226155, 14452310, 28904620]

約数ペア:

[(1, 28904620), (2, 14452310), (4, 7226155), (5, 5780924), (10, 2890462), (20, 1445231), (109, 265180), (218, 132590), (436, 66295), (545, 53036), (1090, 26518), (2180, 13259)]