20873804

素因数分解:

$2^2\times 7^2\times {\mathrm{281}}^1\times {\mathrm{379}}^1$

素因数の和:678

約数の個数: 36

約数和(自身を含む): 42756840

約数和(自身を除く): 21883036

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 281, 379, 562, 758, 1124, 1516, 1967, 2653, 3934, 5306, 7868, 10612, 13769, 18571, 27538, 37142, 55076, 74284, 106499, 212998, 425996, 745493, 1490986, 2981972, 5218451, 10436902, 20873804]

約数ペア:

[(1, 20873804), (2, 10436902), (4, 5218451), (7, 2981972), (14, 1490986), (28, 745493), (49, 425996), (98, 212998), (196, 106499), (281, 74284), (379, 55076), (562, 37142), (758, 27538), (1124, 18571), (1516, 13769), (1967, 10612), (2653, 7868), (3934, 5306)]