211686531

素因数分解:

$3^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{257}}^1\times {\mathrm{643}}^1$

素因数の和:971

約数の個数: 32

約数和(自身を含む): 329645568

約数和(自身を除く): 117959037

約数列:

[1, 3, 7, 21, 61, 183, 257, 427, 643, 771, 1281, 1799, 1929, 4501, 5397, 13503, 15677, 39223, 47031, 109739, 117669, 165251, 274561, 329217, 495753, 823683, 1156757, 3470271, 10080311, 30240933, 70562177, 211686531]

約数ペア:

[(1, 211686531), (3, 70562177), (7, 30240933), (21, 10080311), (61, 3470271), (183, 1156757), (257, 823683), (427, 495753), (643, 329217), (771, 274561), (1281, 165251), (1799, 117669), (1929, 109739), (4501, 47031), (5397, 39223), (13503, 15677)]