21006509

素因数分解:

${\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{431}}^1$

素因数の和:556

約数の個数: 16

約数和(自身を含む): 23141376

約数和(自身を除く): 2134867

約数列:

[1, 17, 47, 61, 431, 799, 1037, 2867, 7327, 20257, 26291, 48739, 344369, 446947, 1235677, 21006509]

約数ペア:

[(1, 21006509), (17, 1235677), (47, 446947), (61, 344369), (431, 48739), (799, 26291), (1037, 20257), (2867, 7327)]