20081440

素因数分解:

$2^5\times 5^1\times {\mathrm{125509}}^1$

素因数の和:125524

約数の個数: 24

約数和(自身を含む): 47442780

約数和(自身を除く): 27361340

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 125509, 251018, 502036, 627545, 1004072, 1255090, 2008144, 2510180, 4016288, 5020360, 10040720, 20081440]

約数ペア:

[(1, 20081440), (2, 10040720), (4, 5020360), (5, 4016288), (8, 2510180), (10, 2008144), (16, 1255090), (20, 1004072), (32, 627545), (40, 502036), (80, 251018), (160, 125509)]