21840133

素因数分解:

$7^2\times {\mathrm{23}}^1\times {\mathrm{19379}}^1$

素因数の和:19416

約数の個数: 12

約数和(自身を含む): 26511840

約数和(自身を除く): 4671707

約数列:

[1, 7, 23, 49, 161, 1127, 19379, 135653, 445717, 949571, 3120019, 21840133]

約数ペア:

[(1, 21840133), (7, 3120019), (23, 949571), (49, 445717), (161, 135653), (1127, 19379)]