978015620

素因数分解:

$2^2\times 5^1\times {\mathrm{48900781}}^1$

素因数の和:48900790

約数の個数: 12

約数和(自身を含む): 2053832844

約数和(自身を除く): 1075817224

約数列:

[1, 2, 4, 5, 10, 20, 48900781, 97801562, 195603124, 244503905, 489007810, 978015620]

約数ペア:

[(1, 978015620), (2, 489007810), (4, 244503905), (5, 195603124), (10, 97801562), (20, 48900781)]