21499874

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{18439}}^1$

素因数の和:18505

約数の個数: 16

約数和(自身を含む): 35847360

約数和(自身を除く): 14347486

約数列:

[1, 2, 11, 22, 53, 106, 583, 1166, 18439, 36878, 202829, 405658, 977267, 1954534, 10749937, 21499874]

約数ペア:

[(1, 21499874), (2, 10749937), (11, 1954534), (22, 977267), (53, 405658), (106, 202829), (583, 36878), (1166, 18439)]