81877311

素因数分解:

$3^4\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{227}}^1$

素因数の和:373

約数の個数: 40

約数和(自身を含む): 126573744

約数和(自身を除く): 44696433

約数列:

[1, 3, 9, 27, 61, 73, 81, 183, 219, 227, 549, 657, 681, 1647, 1971, 2043, 4453, 4941, 5913, 6129, 13359, 13847, 16571, 18387, 40077, 41541, 49713, 120231, 124623, 149139, 360693, 373869, 447417, 1010831, 1121607, 1342251, 3032493, 9097479, 27292437, 81877311]

約数ペア:

[(1, 81877311), (3, 27292437), (9, 9097479), (27, 3032493), (61, 1342251), (73, 1121607), (81, 1010831), (183, 447417), (219, 373869), (227, 360693), (549, 149139), (657, 124623), (681, 120231), (1647, 49713), (1971, 41541), (2043, 40077), (4453, 18387), (4941, 16571), (5913, 13847), (6129, 13359)]