16981215

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{66593}}^1$

素因数の和:66618

約数の個数: 16

約数和(自身を含む): 28768608

約数和(自身を除く): 11787393

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 66593, 199779, 332965, 998895, 1132081, 3396243, 5660405, 16981215]

約数ペア:

[(1, 16981215), (3, 5660405), (5, 3396243), (15, 1132081), (17, 998895), (51, 332965), (85, 199779), (255, 66593)]