20808315

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{331}}^1$

素因数の和:480

約数の個数: 48

約数和(自身を含む): 39776256

約数和(自身を除く): 18967941

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 127, 165, 331, 381, 495, 635, 993, 1143, 1397, 1655, 1905, 2979, 3641, 4191, 4965, 5715, 6985, 10923, 12573, 14895, 18205, 20955, 32769, 42037, 54615, 62865, 126111, 163845, 210185, 378333, 462407, 630555, 1387221, 1891665, 2312035, 4161663, 6936105, 20808315]

約数ペア:

[(1, 20808315), (3, 6936105), (5, 4161663), (9, 2312035), (11, 1891665), (15, 1387221), (33, 630555), (45, 462407), (55, 378333), (99, 210185), (127, 163845), (165, 126111), (331, 62865), (381, 54615), (495, 42037), (635, 32769), (993, 20955), (1143, 18205), (1397, 14895), (1655, 12573), (1905, 10923), (2979, 6985), (3641, 5715), (4191, 4965)]