21070295420

素因数分解:

$2^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{4992961}}^1$

素因数の和:4993181

約数の個数: 24

約数和(自身を含む): 44457333648

約数和(自身を除く): 23387038228

約数列:

[1, 2, 4, 5, 10, 20, 211, 422, 844, 1055, 2110, 4220, 4992961, 9985922, 19971844, 24964805, 49929610, 99859220, 1053514771, 2107029542, 4214059084, 5267573855, 10535147710, 21070295420]

約数ペア:

[(1, 21070295420), (2, 10535147710), (4, 5267573855), (5, 4214059084), (10, 2107029542), (20, 1053514771), (211, 99859220), (422, 49929610), (844, 24964805), (1055, 19971844), (2110, 9985922), (4220, 4992961)]