21053331

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{59981}}^1$

素因数の和:60003

約数の個数: 16

約数和(自身を含む): 33589920

約数和(自身を除く): 12536589

約数列:

[1, 3, 9, 13, 27, 39, 117, 351, 59981, 179943, 539829, 779753, 1619487, 2339259, 7017777, 21053331]

約数ペア:

[(1, 21053331), (3, 7017777), (9, 2339259), (13, 1619487), (27, 779753), (39, 539829), (117, 179943), (351, 59981)]