20993005

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{20089}}^1$

素因数の和:20124

約数の個数: 16

約数和(自身を含む): 28929600

約数和(自身を除く): 7936595

約数列:

[1, 5, 11, 19, 55, 95, 209, 1045, 20089, 100445, 220979, 381691, 1104895, 1908455, 4198601, 20993005]

約数ペア:

[(1, 20993005), (5, 4198601), (11, 1908455), (19, 1104895), (55, 381691), (95, 220979), (209, 100445), (1045, 20089)]