21000786772

素因数分解:

$2^2\times 7^1\times {\mathrm{461}}^1\times {\mathrm{1626959}}^1$

素因数の和:1627431

約数の個数: 24

約数和(自身を含む): 42092709120

約数和(自身を除く): 21091922348

約数列:

[1, 2, 4, 7, 14, 28, 461, 922, 1844, 3227, 6454, 12908, 1626959, 3253918, 6507836, 11388713, 22777426, 45554852, 750028099, 1500056198, 3000112396, 5250196693, 10500393386, 21000786772]

約数ペア:

[(1, 21000786772), (2, 10500393386), (4, 5250196693), (7, 3000112396), (14, 1500056198), (28, 750028099), (461, 45554852), (922, 22777426), (1844, 11388713), (3227, 6507836), (6454, 3253918), (12908, 1626959)]