20804049

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{193}}^1$

素因数の和:294

約数の個数: 48

約数和(自身を含む): 36316800

約数和(自身を除く): 15512751

約数列:

[1, 3, 7, 9, 21, 29, 59, 63, 87, 177, 193, 203, 261, 413, 531, 579, 609, 1239, 1351, 1711, 1737, 1827, 3717, 4053, 5133, 5597, 11387, 11977, 12159, 15399, 16791, 34161, 35931, 39179, 50373, 79709, 102483, 107793, 117537, 239127, 330223, 352611, 717381, 990669, 2311561, 2972007, 6934683, 20804049]

約数ペア:

[(1, 20804049), (3, 6934683), (7, 2972007), (9, 2311561), (21, 990669), (29, 717381), (59, 352611), (63, 330223), (87, 239127), (177, 117537), (193, 107793), (203, 102483), (261, 79709), (413, 50373), (531, 39179), (579, 35931), (609, 34161), (1239, 16791), (1351, 15399), (1711, 12159), (1737, 11977), (1827, 11387), (3717, 5597), (4053, 5133)]