21328760

素因数分解:

$2^3\times 5^1\times {\mathrm{533219}}^1$

素因数の和:533230

約数の個数: 16

約数和(自身を含む): 47989800

約数和(自身を除く): 26661040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 533219, 1066438, 2132876, 2666095, 4265752, 5332190, 10664380, 21328760]

約数ペア:

[(1, 21328760), (2, 10664380), (4, 5332190), (5, 4265752), (8, 2666095), (10, 2132876), (20, 1066438), (40, 533219)]