21000913921

素因数分解:

${\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{1977301}}^1$

素因数の和:1977376

約数の個数: 16

約数和(自身を含む): 24360360640

約数和(自身を除く): 3359446719

約数列:

[1, 13, 19, 43, 247, 559, 817, 10621, 1977301, 25704913, 37568719, 85023943, 488393347, 1105311259, 1615454917, 21000913921]

約数ペア:

[(1, 21000913921), (13, 1615454917), (19, 1105311259), (43, 488393347), (247, 85023943), (559, 37568719), (817, 25704913), (10621, 1977301)]