21814840

素因数分解:

$2^3\times 5^1\times {\mathrm{545371}}^1$

素因数の和:545382

約数の個数: 16

約数和(自身を含む): 49083480

約数和(自身を除く): 27268640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 545371, 1090742, 2181484, 2726855, 4362968, 5453710, 10907420, 21814840]

約数ペア:

[(1, 21814840), (2, 10907420), (4, 5453710), (5, 4362968), (8, 2726855), (10, 2181484), (20, 1090742), (40, 545371)]