20567792

素因数分解:

$2^4\times 7^1\times {\mathrm{409}}^1\times {\mathrm{449}}^1$

素因数の和:873

約数の個数: 40

約数和(自身を含む): 45756000

約数和(自身を除く): 25188208

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 409, 449, 818, 898, 1636, 1796, 2863, 3143, 3272, 3592, 5726, 6286, 6544, 7184, 11452, 12572, 22904, 25144, 45808, 50288, 183641, 367282, 734564, 1285487, 1469128, 2570974, 2938256, 5141948, 10283896, 20567792]

約数ペア:

[(1, 20567792), (2, 10283896), (4, 5141948), (7, 2938256), (8, 2570974), (14, 1469128), (16, 1285487), (28, 734564), (56, 367282), (112, 183641), (409, 50288), (449, 45808), (818, 25144), (898, 22904), (1636, 12572), (1796, 11452), (2863, 7184), (3143, 6544), (3272, 6286), (3592, 5726)]