8728391

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1$

素因数の和:159

約数の個数: 32

約数和(自身を含む): 11366400

約数和(自身を除く): 2638009

約数列:

[1, 7, 19, 29, 31, 73, 133, 203, 217, 511, 551, 589, 899, 1387, 2117, 2263, 3857, 4123, 6293, 9709, 14819, 15841, 17081, 40223, 42997, 65627, 119567, 281561, 300979, 459389, 1246913, 8728391]

約数ペア:

[(1, 8728391), (7, 1246913), (19, 459389), (29, 300979), (31, 281561), (73, 119567), (133, 65627), (203, 42997), (217, 40223), (511, 17081), (551, 15841), (589, 14819), (899, 9709), (1387, 6293), (2117, 4123), (2263, 3857)]