20991099

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{6521}}^1$

素因数の和:6590

約数の個数: 16

約数和(自身を含む): 29740320

約数和(自身を除く): 8749221

約数列:

[1, 3, 29, 37, 87, 111, 1073, 3219, 6521, 19563, 189109, 241277, 567327, 723831, 6997033, 20991099]

約数ペア:

[(1, 20991099), (3, 6997033), (29, 723831), (37, 567327), (87, 241277), (111, 189109), (1073, 19563), (3219, 6521)]