19051720

素因数分解:

$2^3\times 5^1\times {\mathrm{263}}^1\times {\mathrm{1811}}^1$

素因数の和:2085

約数の個数: 32

約数和(自身を含む): 43053120

約数和(自身を除く): 24001400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 263, 526, 1052, 1315, 1811, 2104, 2630, 3622, 5260, 7244, 9055, 10520, 14488, 18110, 36220, 72440, 476293, 952586, 1905172, 2381465, 3810344, 4762930, 9525860, 19051720]

約数ペア:

[(1, 19051720), (2, 9525860), (4, 4762930), (5, 3810344), (8, 2381465), (10, 1905172), (20, 952586), (40, 476293), (263, 72440), (526, 36220), (1052, 18110), (1315, 14488), (1811, 10520), (2104, 9055), (2630, 7244), (3622, 5260)]