181221789

素因数分解:

$3^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{193}}^1\times {\mathrm{733}}^1$

素因数の和:997

約数の個数: 32

約数和(自身を含む): 282513664

約数和(自身を除く): 101291875

約数列:

[1, 3, 7, 21, 61, 183, 193, 427, 579, 733, 1281, 1351, 2199, 4053, 5131, 11773, 15393, 35319, 44713, 82411, 134139, 141469, 247233, 312991, 424407, 938973, 990283, 2970849, 8629609, 25888827, 60407263, 181221789]

約数ペア:

[(1, 181221789), (3, 60407263), (7, 25888827), (21, 8629609), (61, 2970849), (183, 990283), (193, 938973), (427, 424407), (579, 312991), (733, 247233), (1281, 141469), (1351, 134139), (2199, 82411), (4053, 44713), (5131, 35319), (11773, 15393)]