21881410

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{151}}^1\times {\mathrm{337}}^1$

素因数の和:538

約数の個数: 32

約数和(自身を含む): 40689792

約数和(自身を除く): 18808382

約数列:

[1, 2, 5, 10, 43, 86, 151, 215, 302, 337, 430, 674, 755, 1510, 1685, 3370, 6493, 12986, 14491, 28982, 32465, 50887, 64930, 72455, 101774, 144910, 254435, 508870, 2188141, 4376282, 10940705, 21881410]

約数ペア:

[(1, 21881410), (2, 10940705), (5, 4376282), (10, 2188141), (43, 508870), (86, 254435), (151, 144910), (215, 101774), (302, 72455), (337, 64930), (430, 50887), (674, 32465), (755, 28982), (1510, 14491), (1685, 12986), (3370, 6493)]