21000844816

素因数分解:

$2^4\times 7^1\times {\mathrm{223}}^1\times {\mathrm{840841}}^1$

素因数の和:841079

約数の個数: 40

約数和(自身を含む): 46710454784

約数和(自身を除く): 25709609968

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 223, 446, 892, 1561, 1784, 3122, 3568, 6244, 12488, 24976, 840841, 1681682, 3363364, 5885887, 6726728, 11771774, 13453456, 23543548, 47087096, 94174192, 187507543, 375015086, 750030172, 1312552801, 1500060344, 2625105602, 3000120688, 5250211204, 10500422408, 21000844816]

約数ペア:

[(1, 21000844816), (2, 10500422408), (4, 5250211204), (7, 3000120688), (8, 2625105602), (14, 1500060344), (16, 1312552801), (28, 750030172), (56, 375015086), (112, 187507543), (223, 94174192), (446, 47087096), (892, 23543548), (1561, 13453456), (1784, 11771774), (3122, 6726728), (3568, 5885887), (6244, 3363364), (12488, 1681682), (24976, 840841)]