780393520

素因数分解:

$2^4\times 5^1\times {\mathrm{9754919}}^1$

素因数の和:9754932

約数の個数: 20

約数和(自身を含む): 1814415120

約数和(自身を除く): 1034021600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 9754919, 19509838, 39019676, 48774595, 78039352, 97549190, 156078704, 195098380, 390196760, 780393520]

約数ペア:

[(1, 780393520), (2, 390196760), (4, 195098380), (5, 156078704), (8, 97549190), (10, 78039352), (16, 48774595), (20, 39019676), (40, 19509838), (80, 9754919)]