20512905

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{347}}^1\times {\mathrm{563}}^1$

素因数の和:925

約数の個数: 32

約数和(自身を含む): 37684224

約数和(自身を除く): 17171319

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 347, 563, 1041, 1689, 1735, 2429, 2815, 3941, 5205, 7287, 8445, 11823, 12145, 19705, 36435, 59115, 195361, 586083, 976805, 1367527, 2930415, 4102581, 6837635, 20512905]

約数ペア:

[(1, 20512905), (3, 6837635), (5, 4102581), (7, 2930415), (15, 1367527), (21, 976805), (35, 586083), (105, 195361), (347, 59115), (563, 36435), (1041, 19705), (1689, 12145), (1735, 11823), (2429, 8445), (2815, 7287), (3941, 5205)]