12887800

素因数分解:

$2^3\times 5^2\times {\mathrm{64439}}^1$

素因数の和:64455

約数の個数: 24

約数和(自身を含む): 29964600

約数和(自身を除く): 17076800

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 64439, 128878, 257756, 322195, 515512, 644390, 1288780, 1610975, 2577560, 3221950, 6443900, 12887800]

約数ペア:

[(1, 12887800), (2, 6443900), (4, 3221950), (5, 2577560), (8, 1610975), (10, 1288780), (20, 644390), (25, 515512), (40, 322195), (50, 257756), (100, 128878), (200, 64439)]