645946559

素因数分解:

${\mathrm{23}}^2\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{389}}^1$

素因数の和:551

約数の個数: 24

約数和(自身を含む): 702221520

約数和(自身を除く): 56274961

約数列:

[1, 23, 43, 73, 389, 529, 989, 1679, 3139, 8947, 16727, 22747, 28397, 38617, 72197, 205781, 384721, 653131, 1221071, 1660531, 8848583, 15022013, 28084633, 645946559]

約数ペア:

[(1, 645946559), (23, 28084633), (43, 15022013), (73, 8848583), (389, 1660531), (529, 1221071), (989, 653131), (1679, 384721), (3139, 205781), (8947, 72197), (16727, 38617), (22747, 28397)]