20378484

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{193}}^1\times {\mathrm{419}}^1$

素因数の和:629

約数の個数: 72

約数和(自身を含む): 59317440

約数和(自身を除く): 38938956

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 193, 252, 386, 419, 579, 772, 838, 1158, 1257, 1351, 1676, 1737, 2316, 2514, 2702, 2933, 3474, 3771, 4053, 5028, 5404, 5866, 6948, 7542, 8106, 8799, 11732, 12159, 15084, 16212, 17598, 24318, 26397, 35196, 48636, 52794, 80867, 105588, 161734, 242601, 323468, 485202, 566069, 727803, 970404, 1132138, 1455606, 1698207, 2264276, 2911212, 3396414, 5094621, 6792828, 10189242, 20378484]

約数ペア:

[(1, 20378484), (2, 10189242), (3, 6792828), (4, 5094621), (6, 3396414), (7, 2911212), (9, 2264276), (12, 1698207), (14, 1455606), (18, 1132138), (21, 970404), (28, 727803), (36, 566069), (42, 485202), (63, 323468), (84, 242601), (126, 161734), (193, 105588), (252, 80867), (386, 52794), (419, 48636), (579, 35196), (772, 26397), (838, 24318), (1158, 17598), (1257, 16212), (1351, 15084), (1676, 12159), (1737, 11732), (2316, 8799), (2514, 8106), (2702, 7542), (2933, 6948), (3474, 5866), (3771, 5404), (4053, 5028)]