16980243

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{42557}}^1$

素因数の和:42586

約数の個数: 16

約数和(自身を含む): 27237120

約数和(自身を除く): 10256877

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 42557, 127671, 297899, 808583, 893697, 2425749, 5660081, 16980243]

約数ペア:

[(1, 16980243), (3, 5660081), (7, 2425749), (19, 893697), (21, 808583), (57, 297899), (133, 127671), (399, 42557)]