21537417

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{4157}}^1$

素因数の和:4328

約数の個数: 16

約数和(自身を含む): 31534272

約数和(自身を除く): 9996855

約数列:

[1, 3, 11, 33, 157, 471, 1727, 4157, 5181, 12471, 45727, 137181, 652649, 1957947, 7179139, 21537417]

約数ペア:

[(1, 21537417), (3, 7179139), (11, 1957947), (33, 652649), (157, 137181), (471, 45727), (1727, 12471), (4157, 5181)]