20832020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^2\times {\mathrm{179}}^1$

素因数の和:245

約数の個数: 72

約数和(自身を含む): 50168160

約数和(自身を除く): 29336140

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 23, 44, 46, 55, 92, 110, 115, 179, 220, 230, 253, 358, 460, 506, 529, 716, 895, 1012, 1058, 1265, 1790, 1969, 2116, 2530, 2645, 3580, 3938, 4117, 5060, 5290, 5819, 7876, 8234, 9845, 10580, 11638, 16468, 19690, 20585, 23276, 29095, 39380, 41170, 45287, 58190, 82340, 90574, 94691, 116380, 181148, 189382, 226435, 378764, 452870, 473455, 905740, 946910, 1041601, 1893820, 2083202, 4166404, 5208005, 10416010, 20832020]

約数ペア:

[(1, 20832020), (2, 10416010), (4, 5208005), (5, 4166404), (10, 2083202), (11, 1893820), (20, 1041601), (22, 946910), (23, 905740), (44, 473455), (46, 452870), (55, 378764), (92, 226435), (110, 189382), (115, 181148), (179, 116380), (220, 94691), (230, 90574), (253, 82340), (358, 58190), (460, 45287), (506, 41170), (529, 39380), (716, 29095), (895, 23276), (1012, 20585), (1058, 19690), (1265, 16468), (1790, 11638), (1969, 10580), (2116, 9845), (2530, 8234), (2645, 7876), (3580, 5819), (3938, 5290), (4117, 5060)]