17710021

素因数分解:

$7^2\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{131}}^1$

素因数の和:265

約数の個数: 24

約数和(自身を含む): 21669120

約数和(自身を除く): 3959099

約数列:

[1, 7, 31, 49, 89, 131, 217, 623, 917, 1519, 2759, 4061, 4361, 6419, 11659, 19313, 28427, 81613, 135191, 198989, 361429, 571291, 2530003, 17710021]

約数ペア:

[(1, 17710021), (7, 2530003), (31, 571291), (49, 361429), (89, 198989), (131, 135191), (217, 81613), (623, 28427), (917, 19313), (1519, 11659), (2759, 6419), (4061, 4361)]