19961571

素因数分解:

$3^1\times 7^3\times {\mathrm{19}}^1\times {\mathrm{1021}}^1$

素因数の和:1064

約数の個数: 32

約数和(自身を含む): 32704000

約数和(自身を除く): 12742429

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 343, 399, 931, 1021, 1029, 2793, 3063, 6517, 7147, 19399, 19551, 21441, 50029, 58197, 135793, 150087, 350203, 407379, 950551, 1050609, 2851653, 6653857, 19961571]

約数ペア:

[(1, 19961571), (3, 6653857), (7, 2851653), (19, 1050609), (21, 950551), (49, 407379), (57, 350203), (133, 150087), (147, 135793), (343, 58197), (399, 50029), (931, 21441), (1021, 19551), (1029, 19399), (2793, 7147), (3063, 6517)]