18956912

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{91139}}^1$

素因数の和:91160

約数の個数: 20

約数和(自身を含む): 39554760

約数和(自身を除く): 20597848

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 91139, 182278, 364556, 729112, 1184807, 1458224, 2369614, 4739228, 9478456, 18956912]

約数ペア:

[(1, 18956912), (2, 9478456), (4, 4739228), (8, 2369614), (13, 1458224), (16, 1184807), (26, 729112), (52, 364556), (104, 182278), (208, 91139)]