87128321

素因数分解:

$7^2\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{1399}}^1$

素因数の和:1485

約数の個数: 24

約数和(自身を含む): 107251200

約数和(自身を除く): 20122879

約数列:

[1, 7, 31, 41, 49, 217, 287, 1271, 1399, 1519, 2009, 8897, 9793, 43369, 57359, 62279, 68551, 303583, 401513, 1778129, 2125081, 2810591, 12446903, 87128321]

約数ペア:

[(1, 87128321), (7, 12446903), (31, 2810591), (41, 2125081), (49, 1778129), (217, 401513), (287, 303583), (1271, 68551), (1399, 62279), (1519, 57359), (2009, 43369), (8897, 9793)]