21031563

素因数分解:

$3^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{6379}}^1$

素因数の和:6546

約数の個数: 16

約数和(自身を含む): 32257280

約数和(自身を除く): 11225717

約数列:

[1, 3, 7, 21, 157, 471, 1099, 3297, 6379, 19137, 44653, 133959, 1001503, 3004509, 7010521, 21031563]

約数ペア:

[(1, 21031563), (3, 7010521), (7, 3004509), (21, 1001503), (157, 133959), (471, 44653), (1099, 19137), (3297, 6379)]