31481289

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{11621}}^1$

素因数の和:11677

約数の個数: 24

約数和(自身を含む): 53182272

約数和(自身を除く): 21700983

約数列:

[1, 3, 7, 9, 21, 43, 63, 129, 301, 387, 903, 2709, 11621, 34863, 81347, 104589, 244041, 499703, 732123, 1499109, 3497921, 4497327, 10493763, 31481289]

約数ペア:

[(1, 31481289), (3, 10493763), (7, 4497327), (9, 3497921), (21, 1499109), (43, 732123), (63, 499703), (129, 244041), (301, 104589), (387, 81347), (903, 34863), (2709, 11621)]