16721217

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{293}}^1\times {\mathrm{373}}^1$

素因数の和:689

約数の個数: 24

約数和(自身を含む): 25729704

約数和(自身を除く): 9008487

約数列:

[1, 3, 9, 17, 51, 153, 293, 373, 879, 1119, 2637, 3357, 4981, 6341, 14943, 19023, 44829, 57069, 109289, 327867, 983601, 1857913, 5573739, 16721217]

約数ペア:

[(1, 16721217), (3, 5573739), (9, 1857913), (17, 983601), (51, 327867), (153, 109289), (293, 57069), (373, 44829), (879, 19023), (1119, 14943), (2637, 6341), (3357, 4981)]