221452021

素因数分解:

$7^2\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{1723}}^1$

素因数の和:1841

約数の個数: 24

約数和(自身を含む): 268075104

約数和(自身を除く): 46623083

約数列:

[1, 7, 43, 49, 61, 301, 427, 1723, 2107, 2623, 2989, 12061, 18361, 74089, 84427, 105103, 128527, 518623, 735721, 3630361, 4519429, 5150047, 31636003, 221452021]

約数ペア:

[(1, 221452021), (7, 31636003), (43, 5150047), (49, 4519429), (61, 3630361), (301, 735721), (427, 518623), (1723, 128527), (2107, 105103), (2623, 84427), (2989, 74089), (12061, 18361)]