18212159

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1$

素因数の和:191

約数の個数: 32

約数和(自身を含む): 23224320

約数和(自身を除く): 5012161

約数列:

[1, 7, 23, 31, 41, 89, 161, 217, 287, 623, 713, 943, 1271, 2047, 2759, 3649, 4991, 6601, 8897, 14329, 19313, 25543, 29233, 63457, 83927, 113119, 204631, 444199, 587489, 791833, 2601737, 18212159]

約数ペア:

[(1, 18212159), (7, 2601737), (23, 791833), (31, 587489), (41, 444199), (89, 204631), (161, 113119), (217, 83927), (287, 63457), (623, 29233), (713, 25543), (943, 19313), (1271, 14329), (2047, 8897), (2759, 6601), (3649, 4991)]