21055740

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{12101}}^1$

素因数の和:12142

約数の個数: 48

約数和(自身を含む): 60994080

約数和(自身を除く): 39938340

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 29, 30, 58, 60, 87, 116, 145, 174, 290, 348, 435, 580, 870, 1740, 12101, 24202, 36303, 48404, 60505, 72606, 121010, 145212, 181515, 242020, 350929, 363030, 701858, 726060, 1052787, 1403716, 1754645, 2105574, 3509290, 4211148, 5263935, 7018580, 10527870, 21055740]

約数ペア:

[(1, 21055740), (2, 10527870), (3, 7018580), (4, 5263935), (5, 4211148), (6, 3509290), (10, 2105574), (12, 1754645), (15, 1403716), (20, 1052787), (29, 726060), (30, 701858), (58, 363030), (60, 350929), (87, 242020), (116, 181515), (145, 145212), (174, 121010), (290, 72606), (348, 60505), (435, 48404), (580, 36303), (870, 24202), (1740, 12101)]