28220655

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{81799}}^1$

素因数の和:81830

約数の個数: 16

約数和(自身を含む): 47116800

約数和(自身を除く): 18896145

約数列:

[1, 3, 5, 15, 23, 69, 115, 345, 81799, 245397, 408995, 1226985, 1881377, 5644131, 9406885, 28220655]

約数ペア:

[(1, 28220655), (3, 9406885), (5, 5644131), (15, 1881377), (23, 1226985), (69, 408995), (115, 245397), (345, 81799)]