203217820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{781607}}^1$

素因数の和:781629

約数の個数: 24

約数和(自身を含む): 459585504

約数和(自身を除く): 256367684

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 781607, 1563214, 3126428, 3908035, 7816070, 10160891, 15632140, 20321782, 40643564, 50804455, 101608910, 203217820]

約数ペア:

[(1, 203217820), (2, 101608910), (4, 50804455), (5, 40643564), (10, 20321782), (13, 15632140), (20, 10160891), (26, 7816070), (52, 3908035), (65, 3126428), (130, 1563214), (260, 781607)]