20657768

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{62981}}^1$

素因数の和:63028

約数の個数: 16

約数和(自身を含む): 39678660

約数和(自身を除く): 19020892

約数列:

[1, 2, 4, 8, 41, 82, 164, 328, 62981, 125962, 251924, 503848, 2582221, 5164442, 10328884, 20657768]

約数ペア:

[(1, 20657768), (2, 10328884), (4, 5164442), (8, 2582221), (41, 503848), (82, 251924), (164, 125962), (328, 62981)]