21755805

素因数分解:

$3^1\times 5^1\times {\mathrm{1061}}^1\times {\mathrm{1367}}^1$

素因数の和:2436

約数の個数: 16

約数和(自身を含む): 34867584

約数和(自身を除く): 13111779

約数列:

[1, 3, 5, 15, 1061, 1367, 3183, 4101, 5305, 6835, 15915, 20505, 1450387, 4351161, 7251935, 21755805]

約数ペア:

[(1, 21755805), (3, 7251935), (5, 4351161), (15, 1450387), (1061, 20505), (1367, 15915), (3183, 6835), (4101, 5305)]