20178753340

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{5121511}}^1$

素因数の和:5121717

約数の個数: 24

約数和(自身を含む): 42590493792

約数和(自身を除く): 22411740452

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970, 3940, 5121511, 10243022, 20486044, 25607555, 51215110, 102430220, 1008937667, 2017875334, 4035750668, 5044688335, 10089376670, 20178753340]

約数ペア:

[(1, 20178753340), (2, 10089376670), (4, 5044688335), (5, 4035750668), (10, 2017875334), (20, 1008937667), (197, 102430220), (394, 51215110), (788, 25607555), (985, 20486044), (1970, 10243022), (3940, 5121511)]