31485447

素因数分解:

$3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{7039}}^1$

素因数の和:7123

約数の個数: 24

約数和(自身を含む): 52715520

約数和(自身を除く): 21230073

約数列:

[1, 3, 7, 9, 21, 63, 71, 213, 497, 639, 1491, 4473, 7039, 21117, 49273, 63351, 147819, 443457, 499769, 1499307, 3498383, 4497921, 10495149, 31485447]

約数ペア:

[(1, 31485447), (3, 10495149), (7, 4497921), (9, 3498383), (21, 1499307), (63, 499769), (71, 443457), (213, 147819), (497, 63351), (639, 49273), (1491, 21117), (4473, 7039)]