20637988

素因数分解:

$2^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{13907}}^1$

素因数の和:13971

約数の個数: 24

約数和(自身を含む): 42057792

約数和(自身を除く): 21419804

約数列:

[1, 2, 4, 7, 14, 28, 53, 106, 212, 371, 742, 1484, 13907, 27814, 55628, 97349, 194698, 389396, 737071, 1474142, 2948284, 5159497, 10318994, 20637988]

約数ペア:

[(1, 20637988), (2, 10318994), (4, 5159497), (7, 2948284), (14, 1474142), (28, 737071), (53, 389396), (106, 194698), (212, 97349), (371, 55628), (742, 27814), (1484, 13907)]