21038986

素因数分解:

$2^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{103}}^1$

素因数の和:246

約数の個数: 32

約数和(自身を含む): 33965568

約数和(自身を除く): 12926582

約数列:

[1, 2, 41, 47, 53, 82, 94, 103, 106, 206, 1927, 2173, 2491, 3854, 4223, 4346, 4841, 4982, 5459, 8446, 9682, 10918, 102131, 198481, 204262, 223819, 256573, 396962, 447638, 513146, 10519493, 21038986]

約数ペア:

[(1, 21038986), (2, 10519493), (41, 513146), (47, 447638), (53, 396962), (82, 256573), (94, 223819), (103, 204262), (106, 198481), (206, 102131), (1927, 10918), (2173, 9682), (2491, 8446), (3854, 5459), (4223, 4982), (4346, 4841)]