20349520

素因数分解:

$2^4\times 5^1\times {\mathrm{254369}}^1$

素因数の和:254382

約数の個数: 20

約数和(自身を含む): 47312820

約数和(自身を除く): 26963300

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 254369, 508738, 1017476, 1271845, 2034952, 2543690, 4069904, 5087380, 10174760, 20349520]

約数ペア:

[(1, 20349520), (2, 10174760), (4, 5087380), (5, 4069904), (8, 2543690), (10, 2034952), (16, 1271845), (20, 1017476), (40, 508738), (80, 254369)]