20520665

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{269}}^1$

素因数の和:377

約数の個数: 32

約数和(自身を含む): 28771200

約数和(自身を除く): 8250535

約数列:

[1, 5, 11, 19, 55, 73, 95, 209, 269, 365, 803, 1045, 1345, 1387, 2959, 4015, 5111, 6935, 14795, 15257, 19637, 25555, 56221, 76285, 98185, 216007, 281105, 373103, 1080035, 1865515, 4104133, 20520665]

約数ペア:

[(1, 20520665), (5, 4104133), (11, 1865515), (19, 1080035), (55, 373103), (73, 281105), (95, 216007), (209, 98185), (269, 76285), (365, 56221), (803, 25555), (1045, 19637), (1345, 15257), (1387, 14795), (2959, 6935), (4015, 5111)]