21273756

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{251}}^1\times {\mathrm{1009}}^1$

素因数の和:1274

約数の個数: 48

約数和(自身を含む): 57012480

約数和(自身を除く): 35738724

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 251, 502, 753, 1004, 1009, 1506, 1757, 2018, 3012, 3027, 3514, 4036, 5271, 6054, 7028, 7063, 10542, 12108, 14126, 21084, 21189, 28252, 42378, 84756, 253259, 506518, 759777, 1013036, 1519554, 1772813, 3039108, 3545626, 5318439, 7091252, 10636878, 21273756]

約数ペア:

[(1, 21273756), (2, 10636878), (3, 7091252), (4, 5318439), (6, 3545626), (7, 3039108), (12, 1772813), (14, 1519554), (21, 1013036), (28, 759777), (42, 506518), (84, 253259), (251, 84756), (502, 42378), (753, 28252), (1004, 21189), (1009, 21084), (1506, 14126), (1757, 12108), (2018, 10542), (3012, 7063), (3027, 7028), (3514, 6054), (4036, 5271)]