80438780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{211681}}^1$

素因数の和:211709

約数の個数: 24

約数和(自身を含む): 177812880

約数和(自身を除く): 97374100

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 211681, 423362, 846724, 1058405, 2116810, 4021939, 4233620, 8043878, 16087756, 20109695, 40219390, 80438780]

約数ペア:

[(1, 80438780), (2, 40219390), (4, 20109695), (5, 16087756), (10, 8043878), (19, 4233620), (20, 4021939), (38, 2116810), (76, 1058405), (95, 846724), (190, 423362), (380, 211681)]