221335877

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{727}}^1$

素因数の和:849

約数の個数: 32

約数和(自身を含む): 277315584

約数和(自身を除く): 55979707

約数列:

[1, 7, 23, 31, 61, 161, 217, 427, 713, 727, 1403, 1891, 4991, 5089, 9821, 13237, 16721, 22537, 43493, 44347, 117047, 157759, 304451, 310429, 518351, 1019981, 1374757, 3628457, 7139867, 9623299, 31619411, 221335877]

約数ペア:

[(1, 221335877), (7, 31619411), (23, 9623299), (31, 7139867), (61, 3628457), (161, 1374757), (217, 1019981), (427, 518351), (713, 310429), (727, 304451), (1403, 157759), (1891, 117047), (4991, 44347), (5089, 43493), (9821, 22537), (13237, 16721)]