31253271

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1$

素因数の和:168

約数の個数: 64

約数和(自身を含む): 53990400

約数和(自身を除く): 22737129

約数列:

[1, 3, 7, 19, 21, 29, 37, 57, 73, 87, 111, 133, 203, 219, 259, 399, 511, 551, 609, 703, 777, 1073, 1387, 1533, 1653, 2109, 2117, 2701, 3219, 3857, 4161, 4921, 6351, 7511, 8103, 9709, 11571, 14763, 14819, 18907, 20387, 22533, 29127, 40223, 44457, 51319, 56721, 61161, 78329, 120669, 142709, 153957, 234987, 281561, 359233, 428127, 548303, 844683, 1077699, 1488251, 1644909, 4464753, 10417757, 31253271]

約数ペア:

[(1, 31253271), (3, 10417757), (7, 4464753), (19, 1644909), (21, 1488251), (29, 1077699), (37, 844683), (57, 548303), (73, 428127), (87, 359233), (111, 281561), (133, 234987), (203, 153957), (219, 142709), (259, 120669), (399, 78329), (511, 61161), (551, 56721), (609, 51319), (703, 44457), (777, 40223), (1073, 29127), (1387, 22533), (1533, 20387), (1653, 18907), (2109, 14819), (2117, 14763), (2701, 11571), (3219, 9709), (3857, 8103), (4161, 7511), (4921, 6351)]