216143720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{415661}}^1$

素因数の和:415685

約数の個数: 32

約数和(自身を含む): 523734120

約数和(自身を除く): 307590400

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 415661, 831322, 1662644, 2078305, 3325288, 4156610, 5403593, 8313220, 10807186, 16626440, 21614372, 27017965, 43228744, 54035930, 108071860, 216143720]

約数ペア:

[(1, 216143720), (2, 108071860), (4, 54035930), (5, 43228744), (8, 27017965), (10, 21614372), (13, 16626440), (20, 10807186), (26, 8313220), (40, 5403593), (52, 4156610), (65, 3325288), (104, 2078305), (130, 1662644), (260, 831322), (520, 415661)]