20305420

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{9857}}^1$

素因数の和:9969

約数の個数: 24

約数和(自身を含む): 43059744

約数和(自身を除く): 22754324

約数列:

[1, 2, 4, 5, 10, 20, 103, 206, 412, 515, 1030, 2060, 9857, 19714, 39428, 49285, 98570, 197140, 1015271, 2030542, 4061084, 5076355, 10152710, 20305420]

約数ペア:

[(1, 20305420), (2, 10152710), (4, 5076355), (5, 4061084), (10, 2030542), (20, 1015271), (103, 197140), (206, 98570), (412, 49285), (515, 39428), (1030, 19714), (2060, 9857)]