21910865

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{223}}^1\times {\mathrm{457}}^1$

素因数の和:728

約数の個数: 16

約数和(自身を含む): 27084288

約数和(自身を除く): 5173423

約数列:

[1, 5, 43, 215, 223, 457, 1115, 2285, 9589, 19651, 47945, 98255, 101911, 509555, 4382173, 21910865]

約数ペア:

[(1, 21910865), (5, 4382173), (43, 509555), (215, 101911), (223, 98255), (457, 47945), (1115, 19651), (2285, 9589)]