19451971

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{151}}^1\times {\mathrm{239}}^1$

素因数の和:415

約数の個数: 24

約数和(自身を含む): 24952320

約数和(自身を除く): 5500349

約数列:

[1, 7, 11, 49, 77, 151, 239, 539, 1057, 1661, 1673, 2629, 7399, 11627, 11711, 18403, 36089, 81389, 128821, 252623, 396979, 1768361, 2778853, 19451971]

約数ペア:

[(1, 19451971), (7, 2778853), (11, 1768361), (49, 396979), (77, 252623), (151, 128821), (239, 81389), (539, 36089), (1057, 18403), (1661, 11711), (1673, 11627), (2629, 7399)]