391064821

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{257}}^1\times {\mathrm{673}}^1$

素因数の和:973

約数の個数: 32

約数和(自身を含む): 500808960

約数和(自身を除く): 109744139

約数列:

[1, 7, 17, 19, 119, 133, 257, 323, 673, 1799, 2261, 4369, 4711, 4883, 11441, 12787, 30583, 34181, 80087, 83011, 89509, 172961, 217379, 581077, 1210727, 1521653, 2940337, 3286259, 20582359, 23003813, 55866403, 391064821]

約数ペア:

[(1, 391064821), (7, 55866403), (17, 23003813), (19, 20582359), (119, 3286259), (133, 2940337), (257, 1521653), (323, 1210727), (673, 581077), (1799, 217379), (2261, 172961), (4369, 89509), (4711, 83011), (4883, 80087), (11441, 34181), (12787, 30583)]