21920164

素因数分解:

$2^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{14771}}^1$

素因数の和:14835

約数の個数: 24

約数和(自身を含む): 44670528

約数和(自身を除く): 22750364

約数列:

[1, 2, 4, 7, 14, 28, 53, 106, 212, 371, 742, 1484, 14771, 29542, 59084, 103397, 206794, 413588, 782863, 1565726, 3131452, 5480041, 10960082, 21920164]

約数ペア:

[(1, 21920164), (2, 10960082), (4, 5480041), (7, 3131452), (14, 1565726), (28, 782863), (53, 413588), (106, 206794), (212, 103397), (371, 59084), (742, 29542), (1484, 14771)]