1257291

素因数分解:

$3^2\times 7^2\times {\mathrm{2851}}^1$

素因数の和:2871

約数の個数: 18

約数和(自身を含む): 2113332

約数和(自身を除く): 856041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 2851, 8553, 19957, 25659, 59871, 139699, 179613, 419097, 1257291]

約数ペア:

[(1, 1257291), (3, 419097), (7, 179613), (9, 139699), (21, 59871), (49, 25659), (63, 19957), (147, 8553), (441, 2851)]