129388840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{462103}}^1$

素因数の和:462121

約数の個数: 32

約数和(自身を含む): 332714880

約数和(自身を除く): 203326040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 462103, 924206, 1848412, 2310515, 3234721, 3696824, 4621030, 6469442, 9242060, 12938884, 16173605, 18484120, 25877768, 32347210, 64694420, 129388840]

約数ペア:

[(1, 129388840), (2, 64694420), (4, 32347210), (5, 25877768), (7, 18484120), (8, 16173605), (10, 12938884), (14, 9242060), (20, 6469442), (28, 4621030), (35, 3696824), (40, 3234721), (56, 2310515), (70, 1848412), (140, 924206), (280, 462103)]