20959988

素因数分解:

$2^2\times 7^1\times {\mathrm{173}}^1\times {\mathrm{4327}}^1$

素因数の和:4511

約数の個数: 24

約数和(自身を含む): 42172032

約数和(自身を除く): 21212044

約数列:

[1, 2, 4, 7, 14, 28, 173, 346, 692, 1211, 2422, 4327, 4844, 8654, 17308, 30289, 60578, 121156, 748571, 1497142, 2994284, 5239997, 10479994, 20959988]

約数ペア:

[(1, 20959988), (2, 10479994), (4, 5239997), (7, 2994284), (14, 1497142), (28, 748571), (173, 121156), (346, 60578), (692, 30289), (1211, 17308), (2422, 8654), (4327, 4844)]