21306579

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{1423}}^1$

素因数の和:1487

約数の個数: 32

約数和(自身を含む): 34996224

約数和(自身を除く): 13689645

約数列:

[1, 3, 7, 21, 23, 31, 69, 93, 161, 217, 483, 651, 713, 1423, 2139, 4269, 4991, 9961, 14973, 29883, 32729, 44113, 98187, 132339, 229103, 308791, 687309, 926373, 1014599, 3043797, 7102193, 21306579]

約数ペア:

[(1, 21306579), (3, 7102193), (7, 3043797), (21, 1014599), (23, 926373), (31, 687309), (69, 308791), (93, 229103), (161, 132339), (217, 98187), (483, 44113), (651, 32729), (713, 29883), (1423, 14973), (2139, 9961), (4269, 4991)]