11001991

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{379}}^1$

素因数の和:439

約数の個数: 32

約数和(自身を含む): 15321600

約数和(自身を除く): 4319609

約数列:

[1, 7, 11, 13, 29, 77, 91, 143, 203, 319, 377, 379, 1001, 2233, 2639, 2653, 4147, 4169, 4927, 10991, 29029, 29183, 34489, 54197, 76937, 120901, 142883, 379379, 846307, 1000181, 1571713, 11001991]

約数ペア:

[(1, 11001991), (7, 1571713), (11, 1000181), (13, 846307), (29, 379379), (77, 142883), (91, 120901), (143, 76937), (203, 54197), (319, 34489), (377, 29183), (379, 29029), (1001, 10991), (2233, 4927), (2639, 4169), (2653, 4147)]