647289

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1$

素因数の和:141

約数の個数: 24

約数和(自身を含む): 1010880

約数和(自身を除く): 363591

約数列:

[1, 3, 9, 23, 53, 59, 69, 159, 177, 207, 477, 531, 1219, 1357, 3127, 3657, 4071, 9381, 10971, 12213, 28143, 71921, 215763, 647289]

約数ペア:

[(1, 647289), (3, 215763), (9, 71921), (23, 28143), (53, 12213), (59, 10971), (69, 9381), (159, 4071), (177, 3657), (207, 3127), (477, 1357), (531, 1219)]