20465404

素因数分解:

$2^2\times {\mathrm{73}}^1\times {\mathrm{109}}^1\times {\mathrm{643}}^1$

素因数の和:829

約数の個数: 24

約数和(自身を含む): 36695120

約数和(自身を除く): 16229716

約数列:

[1, 2, 4, 73, 109, 146, 218, 292, 436, 643, 1286, 2572, 7957, 15914, 31828, 46939, 70087, 93878, 140174, 187756, 280348, 5116351, 10232702, 20465404]

約数ペア:

[(1, 20465404), (2, 10232702), (4, 5116351), (73, 280348), (109, 187756), (146, 140174), (218, 93878), (292, 70087), (436, 46939), (643, 31828), (1286, 15914), (2572, 7957)]