21838229

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{641}}^1$

素因数の和:836

約数の個数: 16

約数和(自身を含む): 25967616

約数和(自身を除く): 4129387

約数列:

[1, 7, 31, 157, 217, 641, 1099, 4487, 4867, 19871, 34069, 100637, 139097, 704459, 3119747, 21838229]

約数ペア:

[(1, 21838229), (7, 3119747), (31, 704459), (157, 139097), (217, 100637), (641, 34069), (1099, 19871), (4487, 4867)]