21165976

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{4733}}^1$

素因数の和:4795

約数の個数: 32

約数和(自身を含む): 43742160

約数和(自身を除く): 22576184

約数列:

[1, 2, 4, 8, 13, 26, 43, 52, 86, 104, 172, 344, 559, 1118, 2236, 4472, 4733, 9466, 18932, 37864, 61529, 123058, 203519, 246116, 407038, 492232, 814076, 1628152, 2645747, 5291494, 10582988, 21165976]

約数ペア:

[(1, 21165976), (2, 10582988), (4, 5291494), (8, 2645747), (13, 1628152), (26, 814076), (43, 492232), (52, 407038), (86, 246116), (104, 203519), (172, 123058), (344, 61529), (559, 37864), (1118, 18932), (2236, 9466), (4472, 4733)]