20744836

素因数分解:

$2^2\times 7^2\times {\mathrm{53}}^1\times {\mathrm{1997}}^1$

素因数の和:2068

約数の個数: 36

約数和(自身を含む): 43048908

約数和(自身を除く): 22304072

約数列:

[1, 2, 4, 7, 14, 28, 49, 53, 98, 106, 196, 212, 371, 742, 1484, 1997, 2597, 3994, 5194, 7988, 10388, 13979, 27958, 55916, 97853, 105841, 195706, 211682, 391412, 423364, 740887, 1481774, 2963548, 5186209, 10372418, 20744836]

約数ペア:

[(1, 20744836), (2, 10372418), (4, 5186209), (7, 2963548), (14, 1481774), (28, 740887), (49, 423364), (53, 391412), (98, 211682), (106, 195706), (196, 105841), (212, 97853), (371, 55916), (742, 27958), (1484, 13979), (1997, 10388), (2597, 7988), (3994, 5194)]