28112840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{100403}}^1$

素因数の和:100421

約数の個数: 32

約数和(自身を含む): 72290880

約数和(自身を除く): 44178040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 100403, 200806, 401612, 502015, 702821, 803224, 1004030, 1405642, 2008060, 2811284, 3514105, 4016120, 5622568, 7028210, 14056420, 28112840]

約数ペア:

[(1, 28112840), (2, 14056420), (4, 7028210), (5, 5622568), (7, 4016120), (8, 3514105), (10, 2811284), (14, 2008060), (20, 1405642), (28, 1004030), (35, 803224), (40, 702821), (56, 502015), (70, 401612), (140, 200806), (280, 100403)]