21149748

素因数分解:

$2^2\times 3^6\times {\mathrm{7253}}^1$

素因数の和:7275

約数の個数: 42

約数和(自身を含む): 55500354

約数和(自身を除く): 34350606

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 162, 243, 324, 486, 729, 972, 1458, 2916, 7253, 14506, 21759, 29012, 43518, 65277, 87036, 130554, 195831, 261108, 391662, 587493, 783324, 1174986, 1762479, 2349972, 3524958, 5287437, 7049916, 10574874, 21149748]

約数ペア:

[(1, 21149748), (2, 10574874), (3, 7049916), (4, 5287437), (6, 3524958), (9, 2349972), (12, 1762479), (18, 1174986), (27, 783324), (36, 587493), (54, 391662), (81, 261108), (108, 195831), (162, 130554), (243, 87036), (324, 65277), (486, 43518), (729, 29012), (972, 21759), (1458, 14506), (2916, 7253)]