193080980

素因数分解:

$2^2\times 5^1\times {\mathrm{439}}^1\times {\mathrm{21991}}^1$

素因数の和:22439

約数の個数: 24

約数和(自身を含む): 406412160

約数和(自身を除く): 213331180

約数列:

[1, 2, 4, 5, 10, 20, 439, 878, 1756, 2195, 4390, 8780, 21991, 43982, 87964, 109955, 219910, 439820, 9654049, 19308098, 38616196, 48270245, 96540490, 193080980]

約数ペア:

[(1, 193080980), (2, 96540490), (4, 48270245), (5, 38616196), (10, 19308098), (20, 9654049), (439, 439820), (878, 219910), (1756, 109955), (2195, 87964), (4390, 43982), (8780, 21991)]