19440760

素因数分解:

$2^3\times 5^1\times {\mathrm{373}}^1\times {\mathrm{1303}}^1$

素因数の和:1687

約数の個数: 32

約数和(自身を含む): 43892640

約数和(自身を除く): 24451880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 373, 746, 1303, 1492, 1865, 2606, 2984, 3730, 5212, 6515, 7460, 10424, 13030, 14920, 26060, 52120, 486019, 972038, 1944076, 2430095, 3888152, 4860190, 9720380, 19440760]

約数ペア:

[(1, 19440760), (2, 9720380), (4, 4860190), (5, 3888152), (8, 2430095), (10, 1944076), (20, 972038), (40, 486019), (373, 52120), (746, 26060), (1303, 14920), (1492, 13030), (1865, 10424), (2606, 7460), (2984, 6515), (3730, 5212)]