20015210

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{523}}^1$

素因数の和:662

約数の個数: 32

約数和(自身を含む): 37350720

約数和(自身を除く): 17335510

約数列:

[1, 2, 5, 10, 43, 86, 89, 178, 215, 430, 445, 523, 890, 1046, 2615, 3827, 5230, 7654, 19135, 22489, 38270, 44978, 46547, 93094, 112445, 224890, 232735, 465470, 2001521, 4003042, 10007605, 20015210]

約数ペア:

[(1, 20015210), (2, 10007605), (5, 4003042), (10, 2001521), (43, 465470), (86, 232735), (89, 224890), (178, 112445), (215, 93094), (430, 46547), (445, 44978), (523, 38270), (890, 22489), (1046, 19135), (2615, 7654), (3827, 5230)]