81605538

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{647663}}^1$

素因数の和:647678

約数の個数: 24

約数和(自身を含む): 202071168

約数和(自身を除く): 120465630

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 647663, 1295326, 1942989, 3885978, 4533641, 5828967, 9067282, 11657934, 13600923, 27201846, 40802769, 81605538]

約数ペア:

[(1, 81605538), (2, 40802769), (3, 27201846), (6, 13600923), (7, 11657934), (9, 9067282), (14, 5828967), (18, 4533641), (21, 3885978), (42, 1942989), (63, 1295326), (126, 647663)]