21640724

素因数分解:

$2^2\times 7^1\times {\mathrm{811}}^1\times {\mathrm{953}}^1$

素因数の和:1775

約数の個数: 24

約数和(自身を含む): 43380288

約数和(自身を除く): 21739564

約数列:

[1, 2, 4, 7, 14, 28, 811, 953, 1622, 1906, 3244, 3812, 5677, 6671, 11354, 13342, 22708, 26684, 772883, 1545766, 3091532, 5410181, 10820362, 21640724]

約数ペア:

[(1, 21640724), (2, 10820362), (4, 5410181), (7, 3091532), (14, 1545766), (28, 772883), (811, 26684), (953, 22708), (1622, 13342), (1906, 11354), (3244, 6671), (3812, 5677)]