20989210

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{190811}}^1$

素因数の和:190829

約数の個数: 16

約数和(自身を含む): 41215392

約数和(自身を除く): 20226182

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 190811, 381622, 954055, 1908110, 2098921, 4197842, 10494605, 20989210]

約数ペア:

[(1, 20989210), (2, 10494605), (5, 4197842), (10, 2098921), (11, 1908110), (22, 954055), (55, 381622), (110, 190811)]