205020711

素因数分解:

$3^2\times 7^1\times {\mathrm{457}}^1\times {\mathrm{7121}}^1$

素因数の和:7591

約数の個数: 24

約数和(自身を含む): 339235104

約数和(自身を除く): 134214393

約数列:

[1, 3, 7, 9, 21, 63, 457, 1371, 3199, 4113, 7121, 9597, 21363, 28791, 49847, 64089, 149541, 448623, 3254297, 9762891, 22780079, 29288673, 68340237, 205020711]

約数ペア:

[(1, 205020711), (3, 68340237), (7, 29288673), (9, 22780079), (21, 9762891), (63, 3254297), (457, 448623), (1371, 149541), (3199, 64089), (4113, 49847), (7121, 28791), (9597, 21363)]