20899160

素因数分解:

$2^3\times 5^1\times {\mathrm{522479}}^1$

素因数の和:522490

約数の個数: 16

約数和(自身を含む): 47023200

約数和(自身を除く): 26124040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 522479, 1044958, 2089916, 2612395, 4179832, 5224790, 10449580, 20899160]

約数ペア:

[(1, 20899160), (2, 10449580), (4, 5224790), (5, 4179832), (8, 2612395), (10, 2089916), (20, 1044958), (40, 522479)]