257291258

素因数分解:

$2^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{84691}}^1$

素因数の和:84738

約数の個数: 24

約数和(自身を含む): 463434624

約数和(自身を除く): 206143366

約数列:

[1, 2, 7, 14, 31, 49, 62, 98, 217, 434, 1519, 3038, 84691, 169382, 592837, 1185674, 2625421, 4149859, 5250842, 8299718, 18377947, 36755894, 128645629, 257291258]

約数ペア:

[(1, 257291258), (2, 128645629), (7, 36755894), (14, 18377947), (31, 8299718), (49, 5250842), (62, 4149859), (98, 2625421), (217, 1185674), (434, 592837), (1519, 169382), (3038, 84691)]