899440

素因数分解:

$2^4\times 5^1\times {\mathrm{11243}}^1$

素因数の和:11256

約数の個数: 20

約数和(自身を含む): 2091384

約数和(自身を除く): 1191944

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 11243, 22486, 44972, 56215, 89944, 112430, 179888, 224860, 449720, 899440]

約数ペア:

[(1, 899440), (2, 449720), (4, 224860), (5, 179888), (8, 112430), (10, 89944), (16, 56215), (20, 44972), (40, 22486), (80, 11243)]