12821620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{91583}}^1$

素因数の和:91599

約数の個数: 24

約数和(自身を含む): 30772224

約数和(自身を除く): 17950604

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 91583, 183166, 366332, 457915, 641081, 915830, 1282162, 1831660, 2564324, 3205405, 6410810, 12821620]

約数ペア:

[(1, 12821620), (2, 6410810), (4, 3205405), (5, 2564324), (7, 1831660), (10, 1282162), (14, 915830), (20, 641081), (28, 457915), (35, 366332), (70, 183166), (140, 91583)]