20988303

素因数分解:

$3^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{13691}}^1$

素因数の和:13774

約数の個数: 16

約数和(自身を含む): 32422656

約数和(自身を除く): 11434353

約数列:

[1, 3, 7, 21, 73, 219, 511, 1533, 13691, 41073, 95837, 287511, 999443, 2998329, 6996101, 20988303]

約数ペア:

[(1, 20988303), (3, 6996101), (7, 2998329), (21, 999443), (73, 287511), (219, 95837), (511, 41073), (1533, 13691)]