81315738

素因数分解:

$2^1\times 3^4\times 7^1\times {\mathrm{71707}}^1$

素因数の和:71728

約数の個数: 40

約数和(自身を含む): 208240032

約数和(自身を除く): 126924294

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 81, 126, 162, 189, 378, 567, 1134, 71707, 143414, 215121, 430242, 501949, 645363, 1003898, 1290726, 1505847, 1936089, 3011694, 3872178, 4517541, 5808267, 9035082, 11616534, 13552623, 27105246, 40657869, 81315738]

約数ペア:

[(1, 81315738), (2, 40657869), (3, 27105246), (6, 13552623), (7, 11616534), (9, 9035082), (14, 5808267), (18, 4517541), (21, 3872178), (27, 3011694), (42, 1936089), (54, 1505847), (63, 1290726), (81, 1003898), (126, 645363), (162, 501949), (189, 430242), (378, 215121), (567, 143414), (1134, 71707)]