990147140

素因数分解:

$2^2\times 5^1\times {\mathrm{49507357}}^1$

素因数の和:49507366

約数の個数: 12

約数和(自身を含む): 2079309036

約数和(自身を除く): 1089161896

約数列:

[1, 2, 4, 5, 10, 20, 49507357, 99014714, 198029428, 247536785, 495073570, 990147140]

約数ペア:

[(1, 990147140), (2, 495073570), (4, 247536785), (5, 198029428), (10, 99014714), (20, 49507357)]