20672918

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{86861}}^1$

素因数の和:86887

約数の個数: 16

約数和(自身を含む): 37524384

約数和(自身を除く): 16851466

約数列:

[1, 2, 7, 14, 17, 34, 119, 238, 86861, 173722, 608027, 1216054, 1476637, 2953274, 10336459, 20672918]

約数ペア:

[(1, 20672918), (2, 10336459), (7, 2953274), (14, 1476637), (17, 1216054), (34, 608027), (119, 173722), (238, 86861)]