21513169

素因数分解:

${\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1$

素因数の和:312

約数の個数: 16

約数和(自身を含む): 22982400

約数和(自身を除く): 1469231

約数列:

[1, 37, 47, 89, 139, 1739, 3293, 4183, 5143, 6533, 12371, 154771, 241721, 457727, 581437, 21513169]

約数ペア:

[(1, 21513169), (37, 581437), (47, 457727), (89, 241721), (139, 154771), (1739, 12371), (3293, 6533), (4183, 5143)]