19179979

素因数分解:

$7^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{523}}^1$

素因数の和:587

約数の個数: 24

約数和(自身を含む): 24548352

約数和(自身を除く): 5368373

約数列:

[1, 7, 13, 31, 91, 169, 217, 403, 523, 1183, 2821, 3661, 5239, 6799, 16213, 36673, 47593, 88387, 113491, 210769, 618709, 1475383, 2739997, 19179979]

約数ペア:

[(1, 19179979), (7, 2739997), (13, 1475383), (31, 618709), (91, 210769), (169, 113491), (217, 88387), (403, 47593), (523, 36673), (1183, 16213), (2821, 6799), (3661, 5239)]