21492081

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{61231}}^1$

素因数の和:61253

約数の個数: 16

約数和(自身を含む): 34289920

約数和(自身を除く): 12797839

約数列:

[1, 3, 9, 13, 27, 39, 117, 351, 61231, 183693, 551079, 796003, 1653237, 2388009, 7164027, 21492081]

約数ペア:

[(1, 21492081), (3, 7164027), (9, 2388009), (13, 1653237), (27, 796003), (39, 551079), (117, 183693), (351, 61231)]