21772917

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{811}}^1$

素因数の和:993

約数の個数: 24

約数和(自身を含む): 33356960

約数和(自身を除く): 11584043

約数列:

[1, 3, 9, 19, 57, 157, 171, 471, 811, 1413, 2433, 2983, 7299, 8949, 15409, 26847, 46227, 127327, 138681, 381981, 1145943, 2419213, 7257639, 21772917]

約数ペア:

[(1, 21772917), (3, 7257639), (9, 2419213), (19, 1145943), (57, 381981), (157, 138681), (171, 127327), (471, 46227), (811, 26847), (1413, 15409), (2433, 8949), (2983, 7299)]