257642

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{239}}^1$

素因数の和:266

約数の個数: 24

約数和(自身を含む): 492480

約数和(自身を除く): 234838

約数列:

[1, 2, 7, 11, 14, 22, 49, 77, 98, 154, 239, 478, 539, 1078, 1673, 2629, 3346, 5258, 11711, 18403, 23422, 36806, 128821, 257642]

約数ペア:

[(1, 257642), (2, 128821), (7, 36806), (11, 23422), (14, 18403), (22, 11711), (49, 5258), (77, 3346), (98, 2629), (154, 1673), (239, 1078), (478, 539)]