20657871

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{383}}^1\times {\mathrm{461}}^1$

素因数の和:863

約数の個数: 24

約数和(自身を含む): 32288256

約数和(自身を除く): 11630385

約数列:

[1, 3, 9, 13, 39, 117, 383, 461, 1149, 1383, 3447, 4149, 4979, 5993, 14937, 17979, 44811, 53937, 176563, 529689, 1589067, 2295319, 6885957, 20657871]

約数ペア:

[(1, 20657871), (3, 6885957), (9, 2295319), (13, 1589067), (39, 529689), (117, 176563), (383, 53937), (461, 44811), (1149, 17979), (1383, 14937), (3447, 5993), (4149, 4979)]