20476281

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{37}}^1\times {\mathrm{73}}^1$

素因数の和:158

約数の個数: 48

約数和(自身を含む): 34283904

約数和(自身を除く): 13807623

約数列:

[1, 3, 7, 19, 21, 37, 57, 73, 111, 133, 219, 259, 361, 399, 511, 703, 777, 1083, 1387, 1533, 2109, 2527, 2701, 4161, 4921, 7581, 8103, 9709, 13357, 14763, 18907, 26353, 29127, 40071, 51319, 56721, 79059, 93499, 153957, 184471, 280497, 359233, 553413, 975061, 1077699, 2925183, 6825427, 20476281]

約数ペア:

[(1, 20476281), (3, 6825427), (7, 2925183), (19, 1077699), (21, 975061), (37, 553413), (57, 359233), (73, 280497), (111, 184471), (133, 153957), (219, 93499), (259, 79059), (361, 56721), (399, 51319), (511, 40071), (703, 29127), (777, 26353), (1083, 18907), (1387, 14763), (1533, 13357), (2109, 9709), (2527, 8103), (2701, 7581), (4161, 4921)]