15977997

素因数分解:

$3^2\times 7^1\times {\mathrm{127}}^1\times {\mathrm{1997}}^1$

素因数の和:2137

約数の個数: 24

約数和(自身を含む): 26597376

約数和(自身を除く): 10619379

約数列:

[1, 3, 7, 9, 21, 63, 127, 381, 889, 1143, 1997, 2667, 5991, 8001, 13979, 17973, 41937, 125811, 253619, 760857, 1775333, 2282571, 5325999, 15977997]

約数ペア:

[(1, 15977997), (3, 5325999), (7, 2282571), (9, 1775333), (21, 760857), (63, 253619), (127, 125811), (381, 41937), (889, 17973), (1143, 13979), (1997, 8001), (2667, 5991)]