21091060

素因数分解:

$2^2\times 5^1\times {\mathrm{739}}^1\times {\mathrm{1427}}^1$

素因数の和:2175

約数の個数: 24

約数和(自身を含む): 44382240

約数和(自身を除く): 23291180

約数列:

[1, 2, 4, 5, 10, 20, 739, 1427, 1478, 2854, 2956, 3695, 5708, 7135, 7390, 14270, 14780, 28540, 1054553, 2109106, 4218212, 5272765, 10545530, 21091060]

約数ペア:

[(1, 21091060), (2, 10545530), (4, 5272765), (5, 4218212), (10, 2109106), (20, 1054553), (739, 28540), (1427, 14780), (1478, 14270), (2854, 7390), (2956, 7135), (3695, 5708)]