21003669921

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{3874501}}^1$

素因数の和:3874656

約数の個数: 16

約数和(自身を含む): 30376095680

約数和(自身を除く): 9372425759

約数列:

[1, 3, 13, 39, 139, 417, 1807, 5421, 3874501, 11623503, 50368513, 151105539, 538555639, 1615666917, 7001223307, 21003669921]

約数ペア:

[(1, 21003669921), (3, 7001223307), (13, 1615666917), (39, 538555639), (139, 151105539), (417, 50368513), (1807, 11623503), (5421, 3874501)]