19378667

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{229}}^1$

素因数の和:411

約数の個数: 24

約数和(自身を含む): 24856560

約数和(自身を除く): 5477893

約数列:

[1, 7, 11, 49, 77, 157, 229, 539, 1099, 1603, 1727, 2519, 7693, 11221, 12089, 17633, 35953, 84623, 123431, 251671, 395483, 1761697, 2768381, 19378667]

約数ペア:

[(1, 19378667), (7, 2768381), (11, 1761697), (49, 395483), (77, 251671), (157, 123431), (229, 84623), (539, 35953), (1099, 17633), (1603, 12089), (1727, 11221), (2519, 7693)]