129286820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{497257}}^1$

素因数の和:497279

約数の個数: 24

約数和(自身を含む): 292387704

約数和(自身を除く): 163100884

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 497257, 994514, 1989028, 2486285, 4972570, 6464341, 9945140, 12928682, 25857364, 32321705, 64643410, 129286820]

約数ペア:

[(1, 129286820), (2, 64643410), (4, 32321705), (5, 25857364), (10, 12928682), (13, 9945140), (20, 6464341), (26, 4972570), (52, 2486285), (65, 1989028), (130, 994514), (260, 497257)]