21493108

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{431}}^1$

素因数の和:592

約数の個数: 48

約数和(自身を含む): 46738944

約数和(自身を除く): 25245836

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 137, 182, 274, 364, 431, 548, 862, 959, 1724, 1781, 1918, 3017, 3562, 3836, 5603, 6034, 7124, 11206, 12068, 12467, 22412, 24934, 39221, 49868, 59047, 78442, 118094, 156884, 236188, 413329, 767611, 826658, 1535222, 1653316, 3070444, 5373277, 10746554, 21493108]

約数ペア:

[(1, 21493108), (2, 10746554), (4, 5373277), (7, 3070444), (13, 1653316), (14, 1535222), (26, 826658), (28, 767611), (52, 413329), (91, 236188), (137, 156884), (182, 118094), (274, 78442), (364, 59047), (431, 49868), (548, 39221), (862, 24934), (959, 22412), (1724, 12467), (1781, 12068), (1918, 11206), (3017, 7124), (3562, 6034), (3836, 5603)]