1291229860

素因数分解:

$2^2\times 5^1\times {\mathrm{1523}}^1\times {\mathrm{42391}}^1$

素因数の和:43923

約数の個数: 24

約数和(自身を含む): 2713427136

約数和(自身を除く): 1422197276

約数列:

[1, 2, 4, 5, 10, 20, 1523, 3046, 6092, 7615, 15230, 30460, 42391, 84782, 169564, 211955, 423910, 847820, 64561493, 129122986, 258245972, 322807465, 645614930, 1291229860]

約数ペア:

[(1, 1291229860), (2, 645614930), (4, 322807465), (5, 258245972), (10, 129122986), (20, 64561493), (1523, 847820), (3046, 423910), (6092, 211955), (7615, 169564), (15230, 84782), (30460, 42391)]