21810650

素因数分解:

$2^1\times 5^2\times {\mathrm{509}}^1\times {\mathrm{857}}^1$

素因数の和:1378

約数の個数: 24

約数和(自身を含む): 40694940

約数和(自身を除く): 18884290

約数列:

[1, 2, 5, 10, 25, 50, 509, 857, 1018, 1714, 2545, 4285, 5090, 8570, 12725, 21425, 25450, 42850, 436213, 872426, 2181065, 4362130, 10905325, 21810650]

約数ペア:

[(1, 21810650), (2, 10905325), (5, 4362130), (10, 2181065), (25, 872426), (50, 436213), (509, 42850), (857, 25450), (1018, 21425), (1714, 12725), (2545, 8570), (4285, 5090)]