20885912

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{127}}^1\times {\mathrm{337}}^1$

素因数の和:531

約数の個数: 32

約数和(自身を含む): 40235520

約数和(自身を除く): 19349608

約数列:

[1, 2, 4, 8, 61, 122, 127, 244, 254, 337, 488, 508, 674, 1016, 1348, 2696, 7747, 15494, 20557, 30988, 41114, 42799, 61976, 82228, 85598, 164456, 171196, 342392, 2610739, 5221478, 10442956, 20885912]

約数ペア:

[(1, 20885912), (2, 10442956), (4, 5221478), (8, 2610739), (61, 342392), (122, 171196), (127, 164456), (244, 85598), (254, 82228), (337, 61976), (488, 42799), (508, 41114), (674, 30988), (1016, 20557), (1348, 15494), (2696, 7747)]