21053336

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{64187}}^1$

素因数の和:64234

約数の個数: 16

約数和(自身を含む): 40438440

約数和(自身を除く): 19385104

約数列:

[1, 2, 4, 8, 41, 82, 164, 328, 64187, 128374, 256748, 513496, 2631667, 5263334, 10526668, 21053336]

約数ペア:

[(1, 21053336), (2, 10526668), (4, 5263334), (8, 2631667), (41, 513496), (82, 256748), (164, 128374), (328, 64187)]