131388404

素因数分解:

$2^2\times 7^2\times {\mathrm{670349}}^1$

素因数の和:670367

約数の個数: 18

約数和(自身を含む): 267469650

約数和(自身を除く): 136081246

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 670349, 1340698, 2681396, 4692443, 9384886, 18769772, 32847101, 65694202, 131388404]

約数ペア:

[(1, 131388404), (2, 65694202), (4, 32847101), (7, 18769772), (14, 9384886), (28, 4692443), (49, 2681396), (98, 1340698), (196, 670349)]