12257105

素因数分解:

$5^1\times 7^4\times {\mathrm{1021}}^1$

素因数の和:1054

約数の個数: 20

約数和(自身を含む): 17175732

約数和(自身を除く): 4918627

約数列:

[1, 5, 7, 35, 49, 245, 343, 1021, 1715, 2401, 5105, 7147, 12005, 35735, 50029, 250145, 350203, 1751015, 2451421, 12257105]

約数ペア:

[(1, 12257105), (5, 2451421), (7, 1751015), (35, 350203), (49, 250145), (245, 50029), (343, 35735), (1021, 12005), (1715, 7147), (2401, 5105)]