21085388613

素因数分解:

$3^3\times {\mathrm{53}}^1\times {\mathrm{14734723}}^1$

素因数の和:14734785

約数の個数: 16

約数和(自身を含む): 31827003840

約数和(自身を除く): 10741615227

約数列:

[1, 3, 9, 27, 53, 159, 477, 1431, 14734723, 44204169, 132612507, 397837521, 780940319, 2342820957, 7028462871, 21085388613]

約数ペア:

[(1, 21085388613), (3, 7028462871), (9, 2342820957), (27, 780940319), (53, 397837521), (159, 132612507), (477, 44204169), (1431, 14734723)]