1981445837

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{647743}}^1$

素因数の和:647792

約数の個数: 16

約数和(自身を含む): 2487336960

約数和(自身を除く): 505891123

約数列:

[1, 7, 19, 23, 133, 161, 437, 3059, 647743, 4534201, 12307117, 14898089, 86149819, 104286623, 283063691, 1981445837]

約数ペア:

[(1, 1981445837), (7, 283063691), (19, 104286623), (23, 86149819), (133, 14898089), (161, 12307117), (437, 4534201), (3059, 647743)]