20300840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{72503}}^1$

素因数の和:72521

約数の個数: 32

約数和(自身を含む): 52202880

約数和(自身を除く): 31902040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 72503, 145006, 290012, 362515, 507521, 580024, 725030, 1015042, 1450060, 2030084, 2537605, 2900120, 4060168, 5075210, 10150420, 20300840]

約数ペア:

[(1, 20300840), (2, 10150420), (4, 5075210), (5, 4060168), (7, 2900120), (8, 2537605), (10, 2030084), (14, 1450060), (20, 1015042), (28, 725030), (35, 580024), (40, 507521), (56, 362515), (70, 290012), (140, 145006), (280, 72503)]