20215689

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{727}}^1$

素因数の和:797

約数の個数: 32

約数和(自身を含む): 31309824

約数和(自身を除く): 11094135

約数列:

[1, 3, 13, 23, 31, 39, 69, 93, 299, 403, 713, 727, 897, 1209, 2139, 2181, 9269, 9451, 16721, 22537, 27807, 28353, 50163, 67611, 217373, 292981, 518351, 652119, 878943, 1555053, 6738563, 20215689]

約数ペア:

[(1, 20215689), (3, 6738563), (13, 1555053), (23, 878943), (31, 652119), (39, 518351), (69, 292981), (93, 217373), (299, 67611), (403, 50163), (713, 28353), (727, 27807), (897, 22537), (1209, 16721), (2139, 9451), (2181, 9269)]