128867221

素因数分解:

$7^1\times {\mathrm{53}}^1\times {\mathrm{419}}^1\times {\mathrm{829}}^1$

素因数の和:1308

約数の個数: 16

約数和(自身を含む): 150595200

約数和(自身を除く): 21727979

約数列:

[1, 7, 53, 371, 419, 829, 2933, 5803, 22207, 43937, 155449, 307559, 347351, 2431457, 18409603, 128867221]

約数ペア:

[(1, 128867221), (7, 18409603), (53, 2431457), (371, 347351), (419, 307559), (829, 155449), (2933, 43937), (5803, 22207)]