21008851

素因数分解:

${\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{149}}^1\times {\mathrm{181}}^1$

素因数の和:390

約数の個数: 16

約数和(自身を含む): 22932000

約数和(自身を除く): 1923149

約数列:

[1, 19, 41, 149, 181, 779, 2831, 3439, 6109, 7421, 26969, 116071, 140999, 512411, 1105729, 21008851]

約数ペア:

[(1, 21008851), (19, 1105729), (41, 512411), (149, 140999), (181, 116071), (779, 26969), (2831, 7421), (3439, 6109)]