18379361

素因数分解:

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

素因数の和:142

約数の個数: 48

約数和(自身を含む): 26123328

約数和(自身を除く): 7743967

約数列:

[1, 7, 11, 13, 43, 49, 61, 77, 91, 143, 301, 427, 473, 539, 559, 637, 671, 793, 1001, 2107, 2623, 2989, 3311, 3913, 4697, 5551, 6149, 7007, 8723, 18361, 23177, 27391, 28853, 32879, 34099, 38857, 43043, 61061, 128527, 201971, 238693, 301301, 375089, 427427, 1413797, 1670851, 2625623, 18379361]

約数ペア:

[(1, 18379361), (7, 2625623), (11, 1670851), (13, 1413797), (43, 427427), (49, 375089), (61, 301301), (77, 238693), (91, 201971), (143, 128527), (301, 61061), (427, 43043), (473, 38857), (539, 34099), (559, 32879), (637, 28853), (671, 27391), (793, 23177), (1001, 18361), (2107, 8723), (2623, 7007), (2989, 6149), (3311, 5551), (3913, 4697)]