80080820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{210739}}^1$

素因数の和:210767

約数の個数: 24

約数和(自身を含む): 177021600

約数和(自身を除く): 96940780

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 210739, 421478, 842956, 1053695, 2107390, 4004041, 4214780, 8008082, 16016164, 20020205, 40040410, 80080820]

約数ペア:

[(1, 80080820), (2, 40040410), (4, 20020205), (5, 16016164), (10, 8008082), (19, 4214780), (20, 4004041), (38, 2107390), (76, 1053695), (95, 842956), (190, 421478), (380, 210739)]