89984840

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{204511}}^1$

素因数の和:204533

約数の個数: 32

約数和(自身を含む): 220872960

約数和(自身を除く): 130888120

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 204511, 409022, 818044, 1022555, 1636088, 2045110, 2249621, 4090220, 4499242, 8180440, 8998484, 11248105, 17996968, 22496210, 44992420, 89984840]

約数ペア:

[(1, 89984840), (2, 44992420), (4, 22496210), (5, 17996968), (8, 11248105), (10, 8998484), (11, 8180440), (20, 4499242), (22, 4090220), (40, 2249621), (44, 2045110), (55, 1636088), (88, 1022555), (110, 818044), (220, 409022), (440, 204511)]