21136041

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{1723}}^1$

素因数の和:1805

約数の個数: 24

約数和(自身を含む): 32273280

約数和(自身を除く): 11137239

約数列:

[1, 3, 9, 29, 47, 87, 141, 261, 423, 1363, 1723, 4089, 5169, 12267, 15507, 49967, 80981, 149901, 242943, 449703, 728829, 2348449, 7045347, 21136041]

約数ペア:

[(1, 21136041), (3, 7045347), (9, 2348449), (29, 728829), (47, 449703), (87, 242943), (141, 149901), (261, 80981), (423, 49967), (1363, 15507), (1723, 12267), (4089, 5169)]