31981047

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{80153}}^1$

素因数の和:80182

約数の個数: 16

約数和(自身を含む): 51298560

約数和(自身を除く): 19317513

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 80153, 240459, 561071, 1522907, 1683213, 4568721, 10660349, 31981047]

約数ペア:

[(1, 31981047), (3, 10660349), (7, 4568721), (19, 1683213), (21, 1522907), (57, 561071), (133, 240459), (399, 80153)]