28789028

素因数分解:

$2^2\times {\mathrm{19}}^2\times {\mathrm{19937}}^1$

素因数の和:19979

約数の個数: 18

約数和(自身を含む): 53174646

約数和(自身を除く): 24385618

約数列:

[1, 2, 4, 19, 38, 76, 361, 722, 1444, 19937, 39874, 79748, 378803, 757606, 1515212, 7197257, 14394514, 28789028]

約数ペア:

[(1, 28789028), (2, 14394514), (4, 7197257), (19, 1515212), (38, 757606), (76, 378803), (361, 79748), (722, 39874), (1444, 19937)]