21380090

素因数分解:

$2^1\times 5^1\times {\mathrm{151}}^1\times {\mathrm{14159}}^1$

素因数の和:14317

約数の個数: 16

約数和(自身を含む): 38741760

約数和(自身を除く): 17361670

約数列:

[1, 2, 5, 10, 151, 302, 755, 1510, 14159, 28318, 70795, 141590, 2138009, 4276018, 10690045, 21380090]

約数ペア:

[(1, 21380090), (2, 10690045), (5, 4276018), (10, 2138009), (151, 141590), (302, 70795), (755, 28318), (1510, 14159)]