202172971

素因数分解:

$7^2\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1$

素因数の和:153

約数の個数: 72

約数和(自身を含む): 289533552

約数和(自身を除く): 87360581

約数列:

[1, 7, 11, 13, 43, 49, 61, 77, 91, 121, 143, 301, 427, 473, 539, 559, 637, 671, 793, 847, 1001, 1573, 2107, 2623, 2989, 3311, 3913, 4697, 5203, 5551, 5929, 6149, 7007, 7381, 8723, 11011, 18361, 23177, 27391, 28853, 32879, 34099, 36421, 38857, 43043, 51667, 61061, 67639, 77077, 95953, 128527, 201971, 238693, 254947, 301301, 317383, 361669, 375089, 427427, 473473, 671671, 1413797, 1670851, 2221681, 2625623, 3314311, 4125979, 4701697, 15551767, 18379361, 28881853, 202172971]

約数ペア:

[(1, 202172971), (7, 28881853), (11, 18379361), (13, 15551767), (43, 4701697), (49, 4125979), (61, 3314311), (77, 2625623), (91, 2221681), (121, 1670851), (143, 1413797), (301, 671671), (427, 473473), (473, 427427), (539, 375089), (559, 361669), (637, 317383), (671, 301301), (793, 254947), (847, 238693), (1001, 201971), (1573, 128527), (2107, 95953), (2623, 77077), (2989, 67639), (3311, 61061), (3913, 51667), (4697, 43043), (5203, 38857), (5551, 36421), (5929, 34099), (6149, 32879), (7007, 28853), (7381, 27391), (8723, 23177), (11011, 18361)]