20947618

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{9689}}^1$

素因数の和:9761

約数の個数: 16

約数和(自身を含む): 33488640

約数和(自身を除く): 12541022

約数列:

[1, 2, 23, 46, 47, 94, 1081, 2162, 9689, 19378, 222847, 445694, 455383, 910766, 10473809, 20947618]

約数ペア:

[(1, 20947618), (2, 10473809), (23, 910766), (46, 455383), (47, 445694), (94, 222847), (1081, 19378), (2162, 9689)]