20765800

素因数分解:

$2^3\times 5^2\times {\mathrm{11}}^1\times {\mathrm{9439}}^1$

素因数の和:9466

約数の個数: 48

約数和(自身を含む): 52675200

約数和(自身を除く): 31909400

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 40, 44, 50, 55, 88, 100, 110, 200, 220, 275, 440, 550, 1100, 2200, 9439, 18878, 37756, 47195, 75512, 94390, 103829, 188780, 207658, 235975, 377560, 415316, 471950, 519145, 830632, 943900, 1038290, 1887800, 2076580, 2595725, 4153160, 5191450, 10382900, 20765800]

約数ペア:

[(1, 20765800), (2, 10382900), (4, 5191450), (5, 4153160), (8, 2595725), (10, 2076580), (11, 1887800), (20, 1038290), (22, 943900), (25, 830632), (40, 519145), (44, 471950), (50, 415316), (55, 377560), (88, 235975), (100, 207658), (110, 188780), (200, 103829), (220, 94390), (275, 75512), (440, 47195), (550, 37756), (1100, 18878), (2200, 9439)]