15981889

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{199}}^1$

素因数の和:373

約数の個数: 24

約数和(自身を含む): 20520000

約数和(自身を除く): 4538111

約数列:

[1, 7, 11, 49, 77, 149, 199, 539, 1043, 1393, 1639, 2189, 7301, 9751, 11473, 15323, 29651, 80311, 107261, 207557, 326161, 1452899, 2283127, 15981889]

約数ペア:

[(1, 15981889), (7, 2283127), (11, 1452899), (49, 326161), (77, 207557), (149, 107261), (199, 80311), (539, 29651), (1043, 15323), (1393, 11473), (1639, 9751), (2189, 7301)]