19947568

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{65617}}^1$

素因数の和:65644

約数の個数: 20

約数和(自身を含む): 40683160

約数和(自身を除く): 20735592

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 65617, 131234, 262468, 524936, 1049872, 1246723, 2493446, 4986892, 9973784, 19947568]

約数ペア:

[(1, 19947568), (2, 9973784), (4, 4986892), (8, 2493446), (16, 1246723), (19, 1049872), (38, 524936), (76, 262468), (152, 131234), (304, 65617)]