21325090

素因数分解:

$2^1\times 5^1\times {\mathrm{281}}^1\times {\mathrm{7589}}^1$

素因数の和:7877

約数の個数: 16

約数和(自身を含む): 38526840

約数和(自身を除く): 17201750

約数列:

[1, 2, 5, 10, 281, 562, 1405, 2810, 7589, 15178, 37945, 75890, 2132509, 4265018, 10662545, 21325090]

約数ペア:

[(1, 21325090), (2, 10662545), (5, 4265018), (10, 2132509), (281, 75890), (562, 37945), (1405, 15178), (2810, 7589)]