87978989

素因数分解:

$7^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{7129}}^1$

素因数の和:7220

約数の個数: 16

約数和(自身を含む): 105409920

約数和(自身を除く): 17430931

約数列:

[1, 7, 41, 43, 287, 301, 1763, 7129, 12341, 49903, 292289, 306547, 2046023, 2145829, 12568427, 87978989]

約数ペア:

[(1, 87978989), (7, 12568427), (41, 2145829), (43, 2046023), (287, 306547), (301, 292289), (1763, 49903), (7129, 12341)]