20808637480

素因数分解:

$2^3\times 5^1\times {\mathrm{520215937}}^1$

素因数の和:520215948

約数の個数: 16

約数和(自身を含む): 46819434420

約数和(自身を除く): 26010796940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 520215937, 1040431874, 2080863748, 2601079685, 4161727496, 5202159370, 10404318740, 20808637480]

約数ペア:

[(1, 20808637480), (2, 10404318740), (4, 5202159370), (5, 4161727496), (8, 2601079685), (10, 2080863748), (20, 1040431874), (40, 520215937)]