21987196

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71387}}^1$

素因数の和:71409

約数の個数: 24

約数和(自身を含む): 47972736

約数和(自身を除く): 25985540

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 308, 71387, 142774, 285548, 499709, 785257, 999418, 1570514, 1998836, 3141028, 5496799, 10993598, 21987196]

約数ペア:

[(1, 21987196), (2, 10993598), (4, 5496799), (7, 3141028), (11, 1998836), (14, 1570514), (22, 999418), (28, 785257), (44, 499709), (77, 285548), (154, 142774), (308, 71387)]