19988716

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{41299}}^1$

素因数の和:41325

約数の個数: 18

約数和(自身を含む): 38450300

約数和(自身を除く): 18461584

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 41299, 82598, 165196, 454289, 908578, 1817156, 4997179, 9994358, 19988716]

約数ペア:

[(1, 19988716), (2, 9994358), (4, 4997179), (11, 1817156), (22, 908578), (44, 454289), (121, 165196), (242, 82598), (484, 41299)]