20987938

素因数分解:

$2^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{4957}}^1$

素因数の和:5061

約数の個数: 16

約数和(自身を含む): 33020280

約数和(自身を除く): 12032342

約数列:

[1, 2, 29, 58, 73, 146, 2117, 4234, 4957, 9914, 143753, 287506, 361861, 723722, 10493969, 20987938]

約数ペア:

[(1, 20987938), (2, 10493969), (29, 723722), (58, 361861), (73, 287506), (146, 143753), (2117, 9914), (4234, 4957)]