20780081

素因数分解:

$7^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{709}}^1$

素因数の和:848

約数の個数: 16

約数和(自身を含む): 24537600

約数和(自身を除く): 3757519

約数列:

[1, 7, 53, 79, 371, 553, 709, 4187, 4963, 29309, 37577, 56011, 263039, 392077, 2968583, 20780081]

約数ペア:

[(1, 20780081), (7, 2968583), (53, 392077), (79, 263039), (371, 56011), (553, 37577), (709, 29309), (4187, 4963)]