21049515

素因数分解:

$3^2\times 5^1\times {\mathrm{167}}^1\times {\mathrm{2801}}^1$

素因数の和:2979

約数の個数: 24

約数和(自身を含む): 36717408

約数和(自身を除く): 15667893

約数列:

[1, 3, 5, 9, 15, 45, 167, 501, 835, 1503, 2505, 2801, 7515, 8403, 14005, 25209, 42015, 126045, 467767, 1403301, 2338835, 4209903, 7016505, 21049515]

約数ペア:

[(1, 21049515), (3, 7016505), (5, 4209903), (9, 2338835), (15, 1403301), (45, 467767), (167, 126045), (501, 42015), (835, 25209), (1503, 14005), (2505, 8403), (2801, 7515)]