21530915

素因数分解:

$5^1\times 7^1\times {\mathrm{503}}^1\times {\mathrm{1223}}^1$

素因数の和:1738

約数の個数: 16

約数和(自身を含む): 29611008

約数和(自身を除く): 8080093

約数列:

[1, 5, 7, 35, 503, 1223, 2515, 3521, 6115, 8561, 17605, 42805, 615169, 3075845, 4306183, 21530915]

約数ペア:

[(1, 21530915), (5, 4306183), (7, 3075845), (35, 615169), (503, 42805), (1223, 17605), (2515, 8561), (3521, 6115)]