21146867

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{223}}^1$

素因数の和:303

約数の個数: 32

約数和(自身を含む): 27525120

約数和(自身を除く): 6378253

約数列:

[1, 7, 19, 23, 31, 133, 161, 217, 223, 437, 589, 713, 1561, 3059, 4123, 4237, 4991, 5129, 6913, 13547, 29659, 35903, 48391, 94829, 97451, 131347, 158999, 682157, 919429, 1112993, 3020981, 21146867]

約数ペア:

[(1, 21146867), (7, 3020981), (19, 1112993), (23, 919429), (31, 682157), (133, 158999), (161, 131347), (217, 97451), (223, 94829), (437, 48391), (589, 35903), (713, 29659), (1561, 13547), (3059, 6913), (4123, 5129), (4237, 4991)]