81237177

素因数分解:

$3^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{21139}}^1$

素因数の和:21213

約数の個数: 24

約数和(自身を含む): 136310720

約数和(自身を除く): 55073543

約数列:

[1, 3, 7, 9, 21, 61, 63, 183, 427, 549, 1281, 3843, 21139, 63417, 147973, 190251, 443919, 1289479, 1331757, 3868437, 9026353, 11605311, 27079059, 81237177]

約数ペア:

[(1, 81237177), (3, 27079059), (7, 11605311), (9, 9026353), (21, 3868437), (61, 1331757), (63, 1289479), (183, 443919), (427, 190251), (549, 147973), (1281, 63417), (3843, 21139)]