20624681

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{139}}^1$

素因数の和:245

約数の個数: 32

約数和(自身を含む): 27095040

約数和(自身を除く): 6470359

約数列:

[1, 7, 11, 41, 47, 77, 139, 287, 329, 451, 517, 973, 1529, 1927, 3157, 3619, 5699, 6533, 10703, 13489, 21197, 39893, 45731, 62689, 71863, 148379, 267853, 438823, 503041, 1874971, 2946383, 20624681]

約数ペア:

[(1, 20624681), (7, 2946383), (11, 1874971), (41, 503041), (47, 438823), (77, 267853), (139, 148379), (287, 71863), (329, 62689), (451, 45731), (517, 39893), (973, 21197), (1529, 13489), (1927, 10703), (3157, 6533), (3619, 5699)]