21821855

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{9227}}^1$

素因数の和:9286

約数の個数: 16

約数和(自身を含む): 29234304

約数和(自身を除く): 7412449

約数列:

[1, 5, 11, 43, 55, 215, 473, 2365, 9227, 46135, 101497, 396761, 507485, 1983805, 4364371, 21821855]

約数ペア:

[(1, 21821855), (5, 4364371), (11, 1983805), (43, 507485), (55, 396761), (215, 101497), (473, 46135), (2365, 9227)]