20658928

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{67957}}^1$

素因数の和:67984

約数の個数: 20

約数和(自身を含む): 42133960

約数和(自身を除く): 21475032

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 67957, 135914, 271828, 543656, 1087312, 1291183, 2582366, 5164732, 10329464, 20658928]

約数ペア:

[(1, 20658928), (2, 10329464), (4, 5164732), (8, 2582366), (16, 1291183), (19, 1087312), (38, 543656), (76, 271828), (152, 135914), (304, 67957)]