20949609

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{2341}}^1$

素因数の和:2520

約数の個数: 16

約数和(自身を含む): 29602880

約数和(自身を除く): 8653271

約数列:

[1, 3, 19, 57, 157, 471, 2341, 2983, 7023, 8949, 44479, 133437, 367537, 1102611, 6983203, 20949609]

約数ペア:

[(1, 20949609), (3, 6983203), (19, 1102611), (57, 367537), (157, 133437), (471, 44479), (2341, 8949), (2983, 7023)]