21950315

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{281}}^1\times {\mathrm{919}}^1$

素因数の和:1222

約数の個数: 16

約数和(自身を含む): 28019520

約数和(自身を除く): 6069205

約数列:

[1, 5, 17, 85, 281, 919, 1405, 4595, 4777, 15623, 23885, 78115, 258239, 1291195, 4390063, 21950315]

約数ペア:

[(1, 21950315), (5, 4390063), (17, 1291195), (85, 258239), (281, 78115), (919, 23885), (1405, 15623), (4595, 4777)]