21890645

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{36791}}^1$

素因数の和:36820

約数の個数: 16

約数和(自身を含む): 31788288

約数和(自身を除く): 9897643

約数列:

[1, 5, 7, 17, 35, 85, 119, 595, 36791, 183955, 257537, 625447, 1287685, 3127235, 4378129, 21890645]

約数ペア:

[(1, 21890645), (5, 4378129), (7, 3127235), (17, 1287685), (35, 625447), (85, 257537), (119, 183955), (595, 36791)]