639346941

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{28541}}^1$

素因数の和:28697

約数の個数: 24

約数和(自身を含む): 979561440

約数和(自身を除く): 340214499

約数列:

[1, 3, 9, 19, 57, 131, 171, 393, 1179, 2489, 7467, 22401, 28541, 85623, 256869, 542279, 1626837, 3738871, 4880511, 11216613, 33649839, 71038549, 213115647, 639346941]

約数ペア:

[(1, 639346941), (3, 213115647), (9, 71038549), (19, 33649839), (57, 11216613), (131, 4880511), (171, 3738871), (393, 1626837), (1179, 542279), (2489, 256869), (7467, 85623), (22401, 28541)]