21850423

素因数分解:

$7^2\times {\mathrm{17}}^2\times {\mathrm{1543}}^1$

素因数の和:1591

約数の個数: 18

約数和(自身を含む): 27018456

約数和(自身を除く): 5168033

約数列:

[1, 7, 17, 49, 119, 289, 833, 1543, 2023, 10801, 14161, 26231, 75607, 183617, 445927, 1285319, 3121489, 21850423]

約数ペア:

[(1, 21850423), (7, 3121489), (17, 1285319), (49, 445927), (119, 183617), (289, 75607), (833, 26231), (1543, 14161), (2023, 10801)]