21920836

素因数分解:

$2^2\times 7^2\times {\mathrm{97}}^1\times {\mathrm{1153}}^1$

素因数の和:1268

約数の個数: 36

約数和(自身を含む): 45123708

約数和(自身を除く): 23202872

約数列:

[1, 2, 4, 7, 14, 28, 49, 97, 98, 194, 196, 388, 679, 1153, 1358, 2306, 2716, 4612, 4753, 8071, 9506, 16142, 19012, 32284, 56497, 111841, 112994, 223682, 225988, 447364, 782887, 1565774, 3131548, 5480209, 10960418, 21920836]

約数ペア:

[(1, 21920836), (2, 10960418), (4, 5480209), (7, 3131548), (14, 1565774), (28, 782887), (49, 447364), (97, 225988), (98, 223682), (194, 112994), (196, 111841), (388, 56497), (679, 32284), (1153, 19012), (1358, 16142), (2306, 9506), (2716, 8071), (4612, 4753)]