21971092

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{541}}^1$

素因数の和:640

約数の個数: 48

約数和(自身を含む): 45892224

約数和(自身を除く): 23921132

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 71, 142, 143, 284, 286, 541, 572, 781, 923, 1082, 1562, 1846, 2164, 3124, 3692, 5951, 7033, 10153, 11902, 14066, 20306, 23804, 28132, 38411, 40612, 76822, 77363, 153644, 154726, 309452, 422521, 499343, 845042, 998686, 1690084, 1997372, 5492773, 10985546, 21971092]

約数ペア:

[(1, 21971092), (2, 10985546), (4, 5492773), (11, 1997372), (13, 1690084), (22, 998686), (26, 845042), (44, 499343), (52, 422521), (71, 309452), (142, 154726), (143, 153644), (284, 77363), (286, 76822), (541, 40612), (572, 38411), (781, 28132), (923, 23804), (1082, 20306), (1562, 14066), (1846, 11902), (2164, 10153), (3124, 7033), (3692, 5951)]