2587221

素因数分解:

$3^7\times 7^1\times {\mathrm{13}}^2$

素因数の和:54

約数の個数: 48

約数和(自身を含む): 4801920

約数和(自身を除く): 2214699

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 81, 91, 117, 169, 189, 243, 273, 351, 507, 567, 729, 819, 1053, 1183, 1521, 1701, 2187, 2457, 3159, 3549, 4563, 5103, 7371, 9477, 10647, 13689, 15309, 22113, 28431, 31941, 41067, 66339, 95823, 123201, 199017, 287469, 369603, 862407, 2587221]

約数ペア:

[(1, 2587221), (3, 862407), (7, 369603), (9, 287469), (13, 199017), (21, 123201), (27, 95823), (39, 66339), (63, 41067), (81, 31941), (91, 28431), (117, 22113), (169, 15309), (189, 13689), (243, 10647), (273, 9477), (351, 7371), (507, 5103), (567, 4563), (729, 3549), (819, 3159), (1053, 2457), (1183, 2187), (1521, 1701)]