20705181

素因数分解:

$3^1\times 7^1\times {\mathrm{743}}^1\times {\mathrm{1327}}^1$

素因数の和:2080

約数の個数: 16

約数和(自身を含む): 31617024

約数和(自身を除く): 10911843

約数列:

[1, 3, 7, 21, 743, 1327, 2229, 3981, 5201, 9289, 15603, 27867, 985961, 2957883, 6901727, 20705181]

約数ペア:

[(1, 20705181), (3, 6901727), (7, 2957883), (21, 985961), (743, 27867), (1327, 15603), (2229, 9289), (3981, 5201)]