27788215

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{389}}^1$

素因数の和:571

約数の個数: 32

約数和(自身を含む): 41408640

約数和(自身を除く): 13620425

約数列:

[1, 5, 7, 13, 35, 65, 91, 157, 389, 455, 785, 1099, 1945, 2041, 2723, 5057, 5495, 10205, 13615, 14287, 25285, 35399, 61073, 71435, 176995, 305365, 427511, 793949, 2137555, 3969745, 5557643, 27788215]

約数ペア:

[(1, 27788215), (5, 5557643), (7, 3969745), (13, 2137555), (35, 793949), (65, 427511), (91, 305365), (157, 176995), (389, 71435), (455, 61073), (785, 35399), (1099, 25285), (1945, 14287), (2041, 13615), (2723, 10205), (5057, 5495)]