2021159440

素因数分解:

$2^4\times 5^1\times {\mathrm{25264493}}^1$

素因数の和:25264506

約数の個数: 20

約数和(自身を含む): 4699195884

約数和(自身を除く): 2678036444

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 25264493, 50528986, 101057972, 126322465, 202115944, 252644930, 404231888, 505289860, 1010579720, 2021159440]

約数ペア:

[(1, 2021159440), (2, 1010579720), (4, 505289860), (5, 404231888), (8, 252644930), (10, 202115944), (16, 126322465), (20, 101057972), (40, 50528986), (80, 25264493)]