13221221

素因数分解:

${\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{619}}^1$

素因数の和:716

約数の個数: 16

約数和(自身を含む): 14999040

約数和(自身を除く): 1777819

約数列:

[1, 13, 31, 53, 403, 619, 689, 1643, 8047, 19189, 21359, 32807, 249457, 426491, 1017017, 13221221]

約数ペア:

[(1, 13221221), (13, 1017017), (31, 426491), (53, 249457), (403, 32807), (619, 21359), (689, 19189), (1643, 8047)]