21080494030

素因数分解:

$2^1\times 5^1\times {\mathrm{5347}}^1\times {\mathrm{394249}}^1$

素因数の和:399603

約数の個数: 16

約数和(自身を含む): 37952082000

約数和(自身を除く): 16871587970

約数列:

[1, 2, 5, 10, 5347, 10694, 26735, 53470, 394249, 788498, 1971245, 3942490, 2108049403, 4216098806, 10540247015, 21080494030]

約数ペア:

[(1, 21080494030), (2, 10540247015), (5, 4216098806), (10, 2108049403), (5347, 3942490), (10694, 1971245), (26735, 788498), (53470, 394249)]