21406553

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{6203}}^1$

素因数の和:6256

約数の個数: 16

約数和(自身を含む): 26801280

約数和(自身を除く): 5394727

約数列:

[1, 7, 17, 29, 119, 203, 493, 3451, 6203, 43421, 105451, 179887, 738157, 1259209, 3058079, 21406553]

約数ペア:

[(1, 21406553), (7, 3058079), (17, 1259209), (29, 738157), (119, 179887), (203, 105451), (493, 43421), (3451, 6203)]