42181209

素因数分解:

$3^3\times 7^2\times {\mathrm{31883}}^1$

素因数の和:31906

約数の個数: 24

約数和(自身を含む): 72695520

約数和(自身を除く): 30514311

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 441, 1323, 31883, 95649, 223181, 286947, 669543, 860841, 1562267, 2008629, 4686801, 6025887, 14060403, 42181209]

約数ペア:

[(1, 42181209), (3, 14060403), (7, 6025887), (9, 4686801), (21, 2008629), (27, 1562267), (49, 860841), (63, 669543), (147, 286947), (189, 223181), (441, 95649), (1323, 31883)]