19392020

素因数分解:

$2^2\times 5^1\times {\mathrm{821}}^1\times {\mathrm{1181}}^1$

素因数の和:2011

約数の個数: 24

約数和(自身を含む): 40807368

約数和(自身を除く): 21415348

約数列:

[1, 2, 4, 5, 10, 20, 821, 1181, 1642, 2362, 3284, 4105, 4724, 5905, 8210, 11810, 16420, 23620, 969601, 1939202, 3878404, 4848005, 9696010, 19392020]

約数ペア:

[(1, 19392020), (2, 9696010), (4, 4848005), (5, 3878404), (10, 1939202), (20, 969601), (821, 23620), (1181, 16420), (1642, 11810), (2362, 8210), (3284, 5905), (4105, 4724)]