19881880

素因数分解:

$2^3\times 5^1\times {\mathrm{497047}}^1$

素因数の和:497058

約数の個数: 16

約数和(自身を含む): 44734320

約数和(自身を除く): 24852440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 497047, 994094, 1988188, 2485235, 3976376, 4970470, 9940940, 19881880]

約数ペア:

[(1, 19881880), (2, 9940940), (4, 4970470), (5, 3976376), (8, 2485235), (10, 1988188), (20, 994094), (40, 497047)]