21016292

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{7129}}^1$

素因数の和:7211

約数の個数: 24

約数和(自身を含む): 40726560

約数和(自身を除く): 19710268

約数列:

[1, 2, 4, 11, 22, 44, 67, 134, 268, 737, 1474, 2948, 7129, 14258, 28516, 78419, 156838, 313676, 477643, 955286, 1910572, 5254073, 10508146, 21016292]

約数ペア:

[(1, 21016292), (2, 10508146), (4, 5254073), (11, 1910572), (22, 955286), (44, 477643), (67, 313676), (134, 156838), (268, 78419), (737, 28516), (1474, 14258), (2948, 7129)]