19894931

素因数分解:

$7^2\times {\mathrm{23}}^1\times {\mathrm{127}}^1\times {\mathrm{139}}^1$

素因数の和:303

約数の個数: 24

約数和(自身を含む): 24514560

約数和(自身を除く): 4619629

約数列:

[1, 7, 23, 49, 127, 139, 161, 889, 973, 1127, 2921, 3197, 6223, 6811, 17653, 20447, 22379, 123571, 143129, 156653, 406019, 864997, 2842133, 19894931]

約数ペア:

[(1, 19894931), (7, 2842133), (23, 864997), (49, 406019), (127, 156653), (139, 143129), (161, 123571), (889, 22379), (973, 20447), (1127, 17653), (2921, 6811), (3197, 6223)]