20620120

素因数分解:

$2^3\times 5^1\times {\mathrm{193}}^1\times {\mathrm{2671}}^1$

素因数の和:2875

約数の個数: 32

約数和(自身を含む): 46653120

約数和(自身を除く): 26033000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 193, 386, 772, 965, 1544, 1930, 2671, 3860, 5342, 7720, 10684, 13355, 21368, 26710, 53420, 106840, 515503, 1031006, 2062012, 2577515, 4124024, 5155030, 10310060, 20620120]

約数ペア:

[(1, 20620120), (2, 10310060), (4, 5155030), (5, 4124024), (8, 2577515), (10, 2062012), (20, 1031006), (40, 515503), (193, 106840), (386, 53420), (772, 26710), (965, 21368), (1544, 13355), (1930, 10684), (2671, 7720), (3860, 5342)]