21327140

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{24799}}^1$

素因数の和:24851

約数の個数: 24

約数和(自身を含む): 45830400

約数和(自身を除く): 24503260

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 24799, 49598, 99196, 123995, 247990, 495980, 1066357, 2132714, 4265428, 5331785, 10663570, 21327140]

約数ペア:

[(1, 21327140), (2, 10663570), (4, 5331785), (5, 4265428), (10, 2132714), (20, 1066357), (43, 495980), (86, 247990), (172, 123995), (215, 99196), (430, 49598), (860, 24799)]