21085311

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{577}}^1\times {\mathrm{937}}^1$

素因数の和:1530

約数の個数: 16

約数和(自身を含む): 30361184

約数和(自身を除く): 9275873

約数列:

[1, 3, 13, 39, 577, 937, 1731, 2811, 7501, 12181, 22503, 36543, 540649, 1621947, 7028437, 21085311]

約数ペア:

[(1, 21085311), (3, 7028437), (13, 1621947), (39, 540649), (577, 36543), (937, 22503), (1731, 12181), (2811, 7501)]