31381749

素因数分解:

$3^5\times 7^1\times {\mathrm{19}}^1\times {\mathrm{971}}^1$

素因数の和:1012

約数の個数: 48

約数和(自身を含む): 56609280

約数和(自身を除く): 25227531

約数列:

[1, 3, 7, 9, 19, 21, 27, 57, 63, 81, 133, 171, 189, 243, 399, 513, 567, 971, 1197, 1539, 1701, 2913, 3591, 4617, 6797, 8739, 10773, 18449, 20391, 26217, 32319, 55347, 61173, 78651, 129143, 166041, 183519, 235953, 387429, 498123, 550557, 1162287, 1494369, 1651671, 3486861, 4483107, 10460583, 31381749]

約数ペア:

[(1, 31381749), (3, 10460583), (7, 4483107), (9, 3486861), (19, 1651671), (21, 1494369), (27, 1162287), (57, 550557), (63, 498123), (81, 387429), (133, 235953), (171, 183519), (189, 166041), (243, 129143), (399, 78651), (513, 61173), (567, 55347), (971, 32319), (1197, 26217), (1539, 20391), (1701, 18449), (2913, 10773), (3591, 8739), (4617, 6797)]