1811223280

素因数分解:

$2^4\times 5^1\times {\mathrm{22640291}}^1$

素因数の和:22640304

約数の個数: 20

約数和(自身を含む): 4211094312

約数和(自身を除く): 2399871032

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 22640291, 45280582, 90561164, 113201455, 181122328, 226402910, 362244656, 452805820, 905611640, 1811223280]

約数ペア:

[(1, 1811223280), (2, 905611640), (4, 452805820), (5, 362244656), (8, 226402910), (10, 181122328), (16, 113201455), (20, 90561164), (40, 45280582), (80, 22640291)]