73981999

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{251}}^1$

素因数の和:391

約数の個数: 32

約数和(自身を含む): 94832640

約数和(自身を除く): 20850641

約数列:

[1, 7, 13, 41, 79, 91, 251, 287, 533, 553, 1027, 1757, 3239, 3263, 3731, 7189, 10291, 19829, 22673, 22841, 42107, 72037, 133783, 138803, 257777, 294749, 812989, 936481, 1804439, 5690923, 10568857, 73981999]

約数ペア:

[(1, 73981999), (7, 10568857), (13, 5690923), (41, 1804439), (79, 936481), (91, 812989), (251, 294749), (287, 257777), (533, 138803), (553, 133783), (1027, 72037), (1757, 42107), (3239, 22841), (3263, 22673), (3731, 19829), (7189, 10291)]