20381795

素因数分解:

$5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{3617}}^1$

素因数の和:3659

約数の個数: 24

約数和(自身を含む): 29696544

約数和(自身を除く): 9314749

約数列:

[1, 5, 7, 23, 35, 49, 115, 161, 245, 805, 1127, 3617, 5635, 18085, 25319, 83191, 126595, 177233, 415955, 582337, 886165, 2911685, 4076359, 20381795]

約数ペア:

[(1, 20381795), (5, 4076359), (7, 2911685), (23, 886165), (35, 582337), (49, 415955), (115, 177233), (161, 126595), (245, 83191), (805, 25319), (1127, 18085), (3617, 5635)]