18418372

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{389}}^1$

素因数の和:508

約数の個数: 48

約数和(自身を含む): 39312000

約数和(自身を除く): 20893628

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 89, 133, 178, 266, 356, 389, 532, 623, 778, 1246, 1556, 1691, 2492, 2723, 3382, 5446, 6764, 7391, 10892, 11837, 14782, 23674, 29564, 34621, 47348, 51737, 69242, 103474, 138484, 206948, 242347, 484694, 657799, 969388, 1315598, 2631196, 4604593, 9209186, 18418372]

約数ペア:

[(1, 18418372), (2, 9209186), (4, 4604593), (7, 2631196), (14, 1315598), (19, 969388), (28, 657799), (38, 484694), (76, 242347), (89, 206948), (133, 138484), (178, 103474), (266, 69242), (356, 51737), (389, 47348), (532, 34621), (623, 29564), (778, 23674), (1246, 14782), (1556, 11837), (1691, 10892), (2492, 7391), (2723, 6764), (3382, 5446)]