20509797

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{4673}}^1$

素因数の和:4713

約数の個数: 32

約数和(自身を含む): 35896320

約数和(自身を除く): 15386523

約数列:

[1, 3, 7, 11, 19, 21, 33, 57, 77, 133, 209, 231, 399, 627, 1463, 4389, 4673, 14019, 32711, 51403, 88787, 98133, 154209, 266361, 359821, 621509, 976657, 1079463, 1864527, 2929971, 6836599, 20509797]

約数ペア:

[(1, 20509797), (3, 6836599), (7, 2929971), (11, 1864527), (19, 1079463), (21, 976657), (33, 621509), (57, 359821), (77, 266361), (133, 154209), (209, 98133), (231, 88787), (399, 51403), (627, 32711), (1463, 14019), (4389, 4673)]