18725720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{36011}}^1$

素因数の和:36035

約数の個数: 32

約数和(自身を含む): 45375120

約数和(自身を除く): 26649400

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 36011, 72022, 144044, 180055, 288088, 360110, 468143, 720220, 936286, 1440440, 1872572, 2340715, 3745144, 4681430, 9362860, 18725720]

約数ペア:

[(1, 18725720), (2, 9362860), (4, 4681430), (5, 3745144), (8, 2340715), (10, 1872572), (13, 1440440), (20, 936286), (26, 720220), (40, 468143), (52, 360110), (65, 288088), (104, 180055), (130, 144044), (260, 72022), (520, 36011)]