21499436

素因数分解:

$2^2\times 7^2\times {\mathrm{229}}^1\times {\mathrm{479}}^1$

素因数の和:726

約数の個数: 36

約数和(自身を含む): 44049600

約数和(自身を除く): 22550164

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 229, 458, 479, 916, 958, 1603, 1916, 3206, 3353, 6412, 6706, 11221, 13412, 22442, 23471, 44884, 46942, 93884, 109691, 219382, 438764, 767837, 1535674, 3071348, 5374859, 10749718, 21499436]

約数ペア:

[(1, 21499436), (2, 10749718), (4, 5374859), (7, 3071348), (14, 1535674), (28, 767837), (49, 438764), (98, 219382), (196, 109691), (229, 93884), (458, 46942), (479, 44884), (916, 23471), (958, 22442), (1603, 13412), (1916, 11221), (3206, 6706), (3353, 6412)]