30991863

素因数分解:

$3^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{4903}}^1$

素因数の和:4963

約数の個数: 24

約数和(自身を含む): 49196928

約数和(自身を除く): 18205065

約数列:

[1, 3, 7, 21, 43, 49, 129, 147, 301, 903, 2107, 4903, 6321, 14709, 34321, 102963, 210829, 240247, 632487, 720741, 1475803, 4427409, 10330621, 30991863]

約数ペア:

[(1, 30991863), (3, 10330621), (7, 4427409), (21, 1475803), (43, 720741), (49, 632487), (129, 240247), (147, 210829), (301, 102963), (903, 34321), (2107, 14709), (4903, 6321)]