20821836

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{247879}}^1$

素因数の和:247893

約数の個数: 24

約数和(自身を含む): 55525120

約数和(自身を除く): 34703284

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 247879, 495758, 743637, 991516, 1487274, 1735153, 2974548, 3470306, 5205459, 6940612, 10410918, 20821836]

約数ペア:

[(1, 20821836), (2, 10410918), (3, 6940612), (4, 5205459), (6, 3470306), (7, 2974548), (12, 1735153), (14, 1487274), (21, 991516), (28, 743637), (42, 495758), (84, 247879)]