21491338

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{42473}}^1$

素因数の和:42509

約数の個数: 16

約数和(自身を含む): 36697536

約数和(自身を除く): 15206198

約数列:

[1, 2, 11, 22, 23, 46, 253, 506, 42473, 84946, 467203, 934406, 976879, 1953758, 10745669, 21491338]

約数ペア:

[(1, 21491338), (2, 10745669), (11, 1953758), (22, 976879), (23, 934406), (46, 467203), (253, 84946), (506, 42473)]