21031460

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{19841}}^1$

素因数の和:19903

約数の個数: 24

約数和(自身を含む): 45001656

約数和(自身を除く): 23970196

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 212, 265, 530, 1060, 19841, 39682, 79364, 99205, 198410, 396820, 1051573, 2103146, 4206292, 5257865, 10515730, 21031460]

約数ペア:

[(1, 21031460), (2, 10515730), (4, 5257865), (5, 4206292), (10, 2103146), (20, 1051573), (53, 396820), (106, 198410), (212, 99205), (265, 79364), (530, 39682), (1060, 19841)]