20921837279

素因数分解:

$7^2\times {\mathrm{61}}^1\times {\mathrm{6999611}}^1$

素因数の和:6999686

約数の個数: 12

約数和(自身を含む): 24736628808

約数和(自身を除く): 3814791529

約数列:

[1, 7, 49, 61, 427, 2989, 6999611, 48997277, 342980939, 426976271, 2988833897, 20921837279]

約数ペア:

[(1, 20921837279), (7, 2988833897), (49, 426976271), (61, 342980939), (427, 48997277), (2989, 6999611)]