19207820

素因数分解:

$2^2\times 5^1\times {\mathrm{977}}^1\times {\mathrm{983}}^1$

素因数の和:1969

約数の個数: 24

約数和(自身を含む): 40418784

約数和(自身を除く): 21210964

約数列:

[1, 2, 4, 5, 10, 20, 977, 983, 1954, 1966, 3908, 3932, 4885, 4915, 9770, 9830, 19540, 19660, 960391, 1920782, 3841564, 4801955, 9603910, 19207820]

約数ペア:

[(1, 19207820), (2, 9603910), (4, 4801955), (5, 3841564), (10, 1920782), (20, 960391), (977, 19660), (983, 19540), (1954, 9830), (1966, 9770), (3908, 4915), (3932, 4885)]