18315639

素因数分解:

$3^5\times {\mathrm{19}}^1\times {\mathrm{3967}}^1$

素因数の和:4001

約数の個数: 24

約数和(自身を含む): 28887040

約数和(自身を除く): 10571401

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 243, 513, 1539, 3967, 4617, 11901, 35703, 75373, 107109, 226119, 321327, 678357, 963981, 2035071, 6105213, 18315639]

約数ペア:

[(1, 18315639), (3, 6105213), (9, 2035071), (19, 963981), (27, 678357), (57, 321327), (81, 226119), (171, 107109), (243, 75373), (513, 35703), (1539, 11901), (3967, 4617)]