21455236

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{97}}^1\times {\mathrm{457}}^1$

素因数の和:580

約数の個数: 36

約数和(自身を含む): 41787004

約数和(自身を除く): 20331768

約数列:

[1, 2, 4, 11, 22, 44, 97, 121, 194, 242, 388, 457, 484, 914, 1067, 1828, 2134, 4268, 5027, 10054, 11737, 20108, 23474, 44329, 46948, 55297, 88658, 110594, 177316, 221188, 487619, 975238, 1950476, 5363809, 10727618, 21455236]

約数ペア:

[(1, 21455236), (2, 10727618), (4, 5363809), (11, 1950476), (22, 975238), (44, 487619), (97, 221188), (121, 177316), (194, 110594), (242, 88658), (388, 55297), (457, 46948), (484, 44329), (914, 23474), (1067, 20108), (1828, 11737), (2134, 10054), (4268, 5027)]