19938681

素因数分解:

$3^2\times 7^1\times {\mathrm{191}}^1\times {\mathrm{1657}}^1$

素因数の和:1861

約数の個数: 24

約数和(自身を含む): 33106944

約数和(自身を除く): 13168263

約数列:

[1, 3, 7, 9, 21, 63, 191, 573, 1337, 1657, 1719, 4011, 4971, 11599, 12033, 14913, 34797, 104391, 316487, 949461, 2215409, 2848383, 6646227, 19938681]

約数ペア:

[(1, 19938681), (3, 6646227), (7, 2848383), (9, 2215409), (21, 949461), (63, 316487), (191, 104391), (573, 34797), (1337, 14913), (1657, 12033), (1719, 11599), (4011, 4971)]