20631982

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{86689}}^1$

素因数の和:86715

約数の個数: 16

約数和(自身を含む): 37450080

約数和(自身を除く): 16818098

約数列:

[1, 2, 7, 14, 17, 34, 119, 238, 86689, 173378, 606823, 1213646, 1473713, 2947426, 10315991, 20631982]

約数ペア:

[(1, 20631982), (2, 10315991), (7, 2947426), (14, 1473713), (17, 1213646), (34, 606823), (119, 173378), (238, 86689)]