21867255

素因数分解:

$3^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{3547}}^1$

素因数の和:3695

約数の個数: 24

約数和(自身を含む): 38190672

約数和(自身を除く): 16323417

約数列:

[1, 3, 5, 9, 15, 45, 137, 411, 685, 1233, 2055, 3547, 6165, 10641, 17735, 31923, 53205, 159615, 485939, 1457817, 2429695, 4373451, 7289085, 21867255]

約数ペア:

[(1, 21867255), (3, 7289085), (5, 4373451), (9, 2429695), (15, 1457817), (45, 485939), (137, 159615), (411, 53205), (685, 31923), (1233, 17735), (2055, 10641), (3547, 6165)]