28388840

素因数分解:

$2^3\times 5^1\times {\mathrm{457}}^1\times {\mathrm{1553}}^1$

素因数の和:2021

約数の個数: 32

約数和(自身を含む): 64055880

約数和(自身を除く): 35667040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 457, 914, 1553, 1828, 2285, 3106, 3656, 4570, 6212, 7765, 9140, 12424, 15530, 18280, 31060, 62120, 709721, 1419442, 2838884, 3548605, 5677768, 7097210, 14194420, 28388840]

約数ペア:

[(1, 28388840), (2, 14194420), (4, 7097210), (5, 5677768), (8, 3548605), (10, 2838884), (20, 1419442), (40, 709721), (457, 62120), (914, 31060), (1553, 18280), (1828, 15530), (2285, 12424), (3106, 9140), (3656, 7765), (4570, 6212)]