20971278

素因数分解:

$2^1\times 3^3\times {\mathrm{83}}^1\times {\mathrm{4679}}^1$

素因数の和:4773

約数の個数: 32

約数和(自身を含む): 47174400

約数和(自身を除く): 26203122

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 83, 166, 249, 498, 747, 1494, 2241, 4482, 4679, 9358, 14037, 28074, 42111, 84222, 126333, 252666, 388357, 776714, 1165071, 2330142, 3495213, 6990426, 10485639, 20971278]

約数ペア:

[(1, 20971278), (2, 10485639), (3, 6990426), (6, 3495213), (9, 2330142), (18, 1165071), (27, 776714), (54, 388357), (83, 252666), (166, 126333), (249, 84222), (498, 42111), (747, 28074), (1494, 14037), (2241, 9358), (4482, 4679)]