31204040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{111443}}^1$

素因数の和:111461

約数の個数: 32

約数和(自身を含む): 80239680

約数和(自身を除く): 49035640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 111443, 222886, 445772, 557215, 780101, 891544, 1114430, 1560202, 2228860, 3120404, 3900505, 4457720, 6240808, 7801010, 15602020, 31204040]

約数ペア:

[(1, 31204040), (2, 15602020), (4, 7801010), (5, 6240808), (7, 4457720), (8, 3900505), (10, 3120404), (14, 2228860), (20, 1560202), (28, 1114430), (35, 891544), (40, 780101), (56, 557215), (70, 445772), (140, 222886), (280, 111443)]