19938440

素因数分解:

$2^3\times 5^1\times {\mathrm{498461}}^1$

素因数の和:498472

約数の個数: 16

約数和(自身を含む): 44861580

約数和(自身を除く): 24923140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 498461, 996922, 1993844, 2492305, 3987688, 4984610, 9969220, 19938440]

約数ペア:

[(1, 19938440), (2, 9969220), (4, 4984610), (5, 3987688), (8, 2492305), (10, 1993844), (20, 996922), (40, 498461)]