978530

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{1997}}^1$

素因数の和:2018

約数の個数: 24

約数和(自身を含む): 2049948

約数和(自身を除く): 1071418

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 1997, 3994, 9985, 13979, 19970, 27958, 69895, 97853, 139790, 195706, 489265, 978530]

約数ペア:

[(1, 978530), (2, 489265), (5, 195706), (7, 139790), (10, 97853), (14, 69895), (35, 27958), (49, 19970), (70, 13979), (98, 9985), (245, 3994), (490, 1997)]