20188840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{72103}}^1$

素因数の和:72121

約数の個数: 32

約数和(自身を含む): 51914880

約数和(自身を除く): 31726040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 72103, 144206, 288412, 360515, 504721, 576824, 721030, 1009442, 1442060, 2018884, 2523605, 2884120, 4037768, 5047210, 10094420, 20188840]

約数ペア:

[(1, 20188840), (2, 10094420), (4, 5047210), (5, 4037768), (7, 2884120), (8, 2523605), (10, 2018884), (14, 1442060), (20, 1009442), (28, 721030), (35, 576824), (40, 504721), (56, 360515), (70, 288412), (140, 144206), (280, 72103)]