21879905

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{149}}^1\times {\mathrm{683}}^1$

素因数の和:880

約数の個数: 16

約数和(自身を含む): 27086400

約数和(自身を除く): 5206495

約数列:

[1, 5, 43, 149, 215, 683, 745, 3415, 6407, 29369, 32035, 101767, 146845, 508835, 4375981, 21879905]

約数ペア:

[(1, 21879905), (5, 4375981), (43, 508835), (149, 146845), (215, 101767), (683, 32035), (745, 29369), (3415, 6407)]