21049479

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{2389}}^1$

素因数の和:2495

約数の個数: 24

約数和(自身を含む): 33555600

約数和(自身を除く): 12506121

約数列:

[1, 3, 9, 11, 33, 89, 99, 267, 801, 979, 2389, 2937, 7167, 8811, 21501, 26279, 78837, 212621, 236511, 637863, 1913589, 2338831, 7016493, 21049479]

約数ペア:

[(1, 21049479), (3, 7016493), (9, 2338831), (11, 1913589), (33, 637863), (89, 236511), (99, 212621), (267, 78837), (801, 26279), (979, 21501), (2389, 8811), (2937, 7167)]