81467289

素因数分解:

$3^4\times {\mathrm{421}}^1\times {\mathrm{2389}}^1$

素因数の和:2822

約数の個数: 20

約数和(自身を含む): 122038180

約数和(自身を除く): 40570891

約数列:

[1, 3, 9, 27, 81, 421, 1263, 2389, 3789, 7167, 11367, 21501, 34101, 64503, 193509, 1005769, 3017307, 9051921, 27155763, 81467289]

約数ペア:

[(1, 81467289), (3, 27155763), (9, 9051921), (27, 3017307), (81, 1005769), (421, 193509), (1263, 64503), (2389, 34101), (3789, 21501), (7167, 11367)]