28807180

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{193}}^1\times {\mathrm{439}}^1$

素因数の和:658

約数の個数: 48

約数和(自身を含む): 64532160

約数和(自身を除く): 35724980

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 193, 340, 386, 439, 772, 878, 965, 1756, 1930, 2195, 3281, 3860, 4390, 6562, 7463, 8780, 13124, 14926, 16405, 29852, 32810, 37315, 65620, 74630, 84727, 149260, 169454, 338908, 423635, 847270, 1440359, 1694540, 2880718, 5761436, 7201795, 14403590, 28807180]

約数ペア:

[(1, 28807180), (2, 14403590), (4, 7201795), (5, 5761436), (10, 2880718), (17, 1694540), (20, 1440359), (34, 847270), (68, 423635), (85, 338908), (170, 169454), (193, 149260), (340, 84727), (386, 74630), (439, 65620), (772, 37315), (878, 32810), (965, 29852), (1756, 16405), (1930, 14926), (2195, 13124), (3281, 8780), (3860, 7463), (4390, 6562)]