21496981

素因数分解:

${\mathrm{11}}^3\times {\mathrm{31}}^1\times {\mathrm{521}}^1$

素因数の和:585

約数の個数: 16

約数和(自身を含む): 24454656

約数和(自身を除く): 2957675

約数列:

[1, 11, 31, 121, 341, 521, 1331, 3751, 5731, 16151, 41261, 63041, 177661, 693451, 1954271, 21496981]

約数ペア:

[(1, 21496981), (11, 1954271), (31, 693451), (121, 177661), (341, 63041), (521, 41261), (1331, 16151), (3751, 5731)]