990147220

素因数分解:

$2^2\times 5^1\times {\mathrm{49507361}}^1$

素因数の和:49507370

約数の個数: 12

約数和(自身を含む): 2079309204

約数和(自身を除く): 1089161984

約数列:

[1, 2, 4, 5, 10, 20, 49507361, 99014722, 198029444, 247536805, 495073610, 990147220]

約数ペア:

[(1, 990147220), (2, 495073610), (4, 247536805), (5, 198029444), (10, 99014722), (20, 49507361)]