20456751

素因数分解:

$3^1\times 7^1\times {\mathrm{251}}^1\times {\mathrm{3881}}^1$

素因数の和:4142

約数の個数: 16

約数和(自身を含む): 31304448

約数和(自身を除く): 10847697

約数列:

[1, 3, 7, 21, 251, 753, 1757, 3881, 5271, 11643, 27167, 81501, 974131, 2922393, 6818917, 20456751]

約数ペア:

[(1, 20456751), (3, 6818917), (7, 2922393), (21, 974131), (251, 81501), (753, 27167), (1757, 11643), (3881, 5271)]