21288156

素因数分解:

$2^2\times 3^1\times {\mathrm{23}}^1\times {\mathrm{137}}^1\times {\mathrm{563}}^1$

素因数の和:730

約数の個数: 48

約数和(自身を含む): 52303104

約数和(自身を除く): 31014948

約数列:

[1, 2, 3, 4, 6, 12, 23, 46, 69, 92, 137, 138, 274, 276, 411, 548, 563, 822, 1126, 1644, 1689, 2252, 3151, 3378, 6302, 6756, 9453, 12604, 12949, 18906, 25898, 37812, 38847, 51796, 77131, 77694, 154262, 155388, 231393, 308524, 462786, 925572, 1774013, 3548026, 5322039, 7096052, 10644078, 21288156]

約数ペア:

[(1, 21288156), (2, 10644078), (3, 7096052), (4, 5322039), (6, 3548026), (12, 1774013), (23, 925572), (46, 462786), (69, 308524), (92, 231393), (137, 155388), (138, 154262), (274, 77694), (276, 77131), (411, 51796), (548, 38847), (563, 37812), (822, 25898), (1126, 18906), (1644, 12949), (1689, 12604), (2252, 9453), (3151, 6756), (3378, 6302)]