19949867

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{2459}}^1$

素因数の和:2546

約数の個数: 16

約数和(自身を含む): 24403200

約数和(自身を除く): 4453333

約数列:

[1, 7, 19, 61, 133, 427, 1159, 2459, 8113, 17213, 46721, 149999, 327047, 1049993, 2849981, 19949867]

約数ペア:

[(1, 19949867), (7, 2849981), (19, 1049993), (61, 327047), (133, 149999), (427, 46721), (1159, 17213), (2459, 8113)]