665637141

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{89}}^1$

素因数の和:286

約数の個数: 64

約数和(自身を含む): 1020418560

約数和(自身を除く): 354781419

約数列:

[1, 3, 13, 37, 39, 71, 73, 89, 111, 213, 219, 267, 481, 923, 949, 1157, 1443, 2627, 2701, 2769, 2847, 3293, 3471, 5183, 6319, 6497, 7881, 8103, 9879, 15549, 18957, 19491, 34151, 35113, 42809, 67379, 82147, 84461, 102453, 105339, 128427, 191771, 202137, 233803, 240389, 246441, 253383, 461287, 575313, 701409, 721167, 1383861, 2493023, 3039439, 3125057, 5996731, 7479069, 9118317, 9375171, 17067619, 17990193, 51202857, 221879047, 665637141]

約数ペア:

[(1, 665637141), (3, 221879047), (13, 51202857), (37, 17990193), (39, 17067619), (71, 9375171), (73, 9118317), (89, 7479069), (111, 5996731), (213, 3125057), (219, 3039439), (267, 2493023), (481, 1383861), (923, 721167), (949, 701409), (1157, 575313), (1443, 461287), (2627, 253383), (2701, 246441), (2769, 240389), (2847, 233803), (3293, 202137), (3471, 191771), (5183, 128427), (6319, 105339), (6497, 102453), (7881, 84461), (8103, 82147), (9879, 67379), (15549, 42809), (18957, 35113), (19491, 34151)]