19800784

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{72797}}^1$

素因数の和:72822

約数の個数: 20

約数和(自身を含む): 40621284

約数和(自身を除く): 20820500

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 72797, 145594, 291188, 582376, 1164752, 1237549, 2475098, 4950196, 9900392, 19800784]

約数ペア:

[(1, 19800784), (2, 9900392), (4, 4950196), (8, 2475098), (16, 1237549), (17, 1164752), (34, 582376), (68, 291188), (136, 145594), (272, 72797)]