20902684

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{6691}}^1$

素因数の和:6777

約数の個数: 24

約数和(自身を含む): 40473216

約数和(自身を除く): 19570532

約数列:

[1, 2, 4, 11, 22, 44, 71, 142, 284, 781, 1562, 3124, 6691, 13382, 26764, 73601, 147202, 294404, 475061, 950122, 1900244, 5225671, 10451342, 20902684]

約数ペア:

[(1, 20902684), (2, 10451342), (4, 5225671), (11, 1900244), (22, 950122), (44, 475061), (71, 294404), (142, 147202), (284, 73601), (781, 26764), (1562, 13382), (3124, 6691)]