21411551

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{7823}}^1$

素因数の和:7870

約数の個数: 16

約数和(自身を含む): 27039744

約数和(自身を除く): 5628193

約数列:

[1, 7, 17, 23, 119, 161, 391, 2737, 7823, 54761, 132991, 179929, 930937, 1259503, 3058793, 21411551]

約数ペア:

[(1, 21411551), (7, 3058793), (17, 1259503), (23, 930937), (119, 179929), (161, 132991), (391, 54761), (2737, 7823)]