18181721

素因数分解:

${\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{197}}^1$

素因数の和:364

約数の個数: 16

約数和(自身を含む): 19887120

約数和(自身を除く): 1705399

約数列:

[1, 17, 61, 89, 197, 1037, 1513, 3349, 5429, 12017, 17533, 92293, 204289, 298061, 1069513, 18181721]

約数ペア:

[(1, 18181721), (17, 1069513), (61, 298061), (89, 204289), (197, 92293), (1037, 17533), (1513, 12017), (3349, 5429)]