978013780

素因数分解:

$2^2\times 5^1\times {\mathrm{48900689}}^1$

素因数の和:48900698

約数の個数: 12

約数和(自身を含む): 2053828980

約数和(自身を除く): 1075815200

約数列:

[1, 2, 4, 5, 10, 20, 48900689, 97801378, 195602756, 244503445, 489006890, 978013780]

約数ペア:

[(1, 978013780), (2, 489006890), (4, 244503445), (5, 195602756), (10, 97801378), (20, 48900689)]