220171497

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{307}}^1$

素因数の和:438

約数の個数: 64

約数和(自身を含む): 377524224

約数和(自身を除く): 157352727

約数列:

[1, 3, 7, 13, 21, 37, 39, 71, 91, 111, 213, 259, 273, 307, 481, 497, 777, 921, 923, 1443, 1491, 2149, 2627, 2769, 3367, 3991, 6447, 6461, 7881, 10101, 11359, 11973, 18389, 19383, 21797, 27937, 34077, 34151, 55167, 65391, 79513, 83811, 102453, 147667, 152579, 238539, 239057, 283361, 443001, 457737, 717171, 806489, 850083, 1033669, 1983527, 2419467, 3101007, 5645423, 5950581, 10484357, 16936269, 31453071, 73390499, 220171497]

約数ペア:

[(1, 220171497), (3, 73390499), (7, 31453071), (13, 16936269), (21, 10484357), (37, 5950581), (39, 5645423), (71, 3101007), (91, 2419467), (111, 1983527), (213, 1033669), (259, 850083), (273, 806489), (307, 717171), (481, 457737), (497, 443001), (777, 283361), (921, 239057), (923, 238539), (1443, 152579), (1491, 147667), (2149, 102453), (2627, 83811), (2769, 79513), (3367, 65391), (3991, 55167), (6447, 34151), (6461, 34077), (7881, 27937), (10101, 21797), (11359, 19383), (11973, 18389)]