21329080

素因数分解:

$2^3\times 5^1\times {\mathrm{533227}}^1$

素因数の和:533238

約数の個数: 16

約数和(自身を含む): 47990520

約数和(自身を除く): 26661440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 533227, 1066454, 2132908, 2666135, 4265816, 5332270, 10664540, 21329080]

約数ペア:

[(1, 21329080), (2, 10664540), (4, 5332270), (5, 4265816), (8, 2666135), (10, 2132908), (20, 1066454), (40, 533227)]