20488690

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{23021}}^1$

素因数の和:23117

約数の個数: 16

約数和(自身を含む): 37295640

約数和(自身を除く): 16806950

約数列:

[1, 2, 5, 10, 89, 178, 445, 890, 23021, 46042, 115105, 230210, 2048869, 4097738, 10244345, 20488690]

約数ペア:

[(1, 20488690), (2, 10244345), (5, 4097738), (10, 2048869), (89, 230210), (178, 115105), (445, 46042), (890, 23021)]