20781040007

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{3743657}}^1$

素因数の和:3743738

約数の個数: 16

約数和(自身を含む): 25995961152

約数和(自身を除く): 5214921145

約数列:

[1, 7, 13, 61, 91, 427, 793, 5551, 3743657, 26205599, 48667541, 228363077, 340672787, 1598541539, 2968720001, 20781040007]

約数ペア:

[(1, 20781040007), (7, 2968720001), (13, 1598541539), (61, 340672787), (91, 228363077), (427, 48667541), (793, 26205599), (5551, 3743657)]