57211895

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{28393}}^1$

素因数の和:28442

約数の個数: 16

約数和(自身を含む): 76323072

約数和(自身を除く): 19111177

約数列:

[1, 5, 13, 31, 65, 155, 403, 2015, 28393, 141965, 369109, 880183, 1845545, 4400915, 11442379, 57211895]

約数ペア:

[(1, 57211895), (5, 11442379), (13, 4400915), (31, 1845545), (65, 880183), (155, 369109), (403, 141965), (2015, 28393)]