2019979540

素因数分解:

$2^2\times 5^1\times {\mathrm{6991}}^1\times {\mathrm{14447}}^1$

素因数の和:21447

約数の個数: 24

約数和(自身を含む): 4242857472

約数和(自身を除く): 2222877932

約数列:

[1, 2, 4, 5, 10, 20, 6991, 13982, 14447, 27964, 28894, 34955, 57788, 69910, 72235, 139820, 144470, 288940, 100998977, 201997954, 403995908, 504994885, 1009989770, 2019979540]

約数ペア:

[(1, 2019979540), (2, 1009989770), (4, 504994885), (5, 403995908), (10, 201997954), (20, 100998977), (6991, 288940), (13982, 144470), (14447, 139820), (27964, 72235), (28894, 69910), (34955, 57788)]