20887472

素因数分解:

$2^4\times {\mathrm{163}}^1\times {\mathrm{8009}}^1$

素因数の和:8180

約数の個数: 20

約数和(自身を含む): 40722840

約数和(自身を除く): 19835368

約数列:

[1, 2, 4, 8, 16, 163, 326, 652, 1304, 2608, 8009, 16018, 32036, 64072, 128144, 1305467, 2610934, 5221868, 10443736, 20887472]

約数ペア:

[(1, 20887472), (2, 10443736), (4, 5221868), (8, 2610934), (16, 1305467), (163, 128144), (326, 64072), (652, 32036), (1304, 16018), (2608, 8009)]