21015978

素因数分解:

$2^1\times 3^1\times {\mathrm{17}}^1\times {\mathrm{206039}}^1$

素因数の和:206061

約数の個数: 16

約数和(自身を含む): 44504640

約数和(自身を除く): 23488662

約数列:

[1, 2, 3, 6, 17, 34, 51, 102, 206039, 412078, 618117, 1236234, 3502663, 7005326, 10507989, 21015978]

約数ペア:

[(1, 21015978), (2, 10507989), (3, 7005326), (6, 3502663), (17, 1236234), (34, 618117), (51, 412078), (102, 206039)]