20172688

素因数分解:

$2^4\times {\mathrm{509}}^1\times {\mathrm{2477}}^1$

素因数の和:2994

約数の個数: 20

約数和(自身を含む): 39177180

約数和(自身を除く): 19004492

約数列:

[1, 2, 4, 8, 16, 509, 1018, 2036, 2477, 4072, 4954, 8144, 9908, 19816, 39632, 1260793, 2521586, 5043172, 10086344, 20172688]

約数ペア:

[(1, 20172688), (2, 10086344), (4, 5043172), (8, 2521586), (16, 1260793), (509, 39632), (1018, 19816), (2036, 9908), (2477, 8144), (4072, 4954)]