19808165

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{373}}^1$

素因数の和:453

約数の個数: 32

約数和(自身を含む): 27646080

約数和(自身を除く): 7837915

約数列:

[1, 5, 13, 19, 43, 65, 95, 215, 247, 373, 559, 817, 1235, 1865, 2795, 4085, 4849, 7087, 10621, 16039, 24245, 35435, 53105, 80195, 92131, 208507, 304741, 460655, 1042535, 1523705, 3961633, 19808165]

約数ペア:

[(1, 19808165), (5, 3961633), (13, 1523705), (19, 1042535), (43, 460655), (65, 304741), (95, 208507), (215, 92131), (247, 80195), (373, 53105), (559, 35435), (817, 24245), (1235, 16039), (1865, 10621), (2795, 7087), (4085, 4849)]