18012057

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{6449}}^1$

素因数の和:6485

約数の個数: 24

約数和(自身を含む): 29412000

約数和(自身を除く): 11399943

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 399, 931, 2793, 6449, 19347, 45143, 122531, 135429, 316001, 367593, 857717, 948003, 2573151, 6004019, 18012057]

約数ペア:

[(1, 18012057), (3, 6004019), (7, 2573151), (19, 948003), (21, 857717), (49, 367593), (57, 316001), (133, 135429), (147, 122531), (399, 45143), (931, 19347), (2793, 6449)]