263722221

素因数分解:

$3^2\times 7^1\times {\mathrm{2039}}^1\times {\mathrm{2053}}^1$

素因数の和:4105

約数の個数: 24

約数和(自身を含む): 435776640

約数和(自身を除く): 172054419

約数列:

[1, 3, 7, 9, 21, 63, 2039, 2053, 6117, 6159, 14273, 14371, 18351, 18477, 42819, 43113, 128457, 129339, 4186067, 12558201, 29302469, 37674603, 87907407, 263722221]

約数ペア:

[(1, 263722221), (3, 87907407), (7, 37674603), (9, 29302469), (21, 12558201), (63, 4186067), (2039, 129339), (2053, 128457), (6117, 43113), (6159, 42819), (14273, 18477), (14371, 18351)]