21791008

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{977}}^1$

素因数の和:1045

約数の個数: 48

約数和(自身を含む): 46580184

約数和(自身を除く): 24789176

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 41, 68, 82, 136, 164, 272, 328, 544, 656, 697, 977, 1312, 1394, 1954, 2788, 3908, 5576, 7816, 11152, 15632, 16609, 22304, 31264, 33218, 40057, 66436, 80114, 132872, 160228, 265744, 320456, 531488, 640912, 680969, 1281824, 1361938, 2723876, 5447752, 10895504, 21791008]

約数ペア:

[(1, 21791008), (2, 10895504), (4, 5447752), (8, 2723876), (16, 1361938), (17, 1281824), (32, 680969), (34, 640912), (41, 531488), (68, 320456), (82, 265744), (136, 160228), (164, 132872), (272, 80114), (328, 66436), (544, 40057), (656, 33218), (697, 31264), (977, 22304), (1312, 16609), (1394, 15632), (1954, 11152), (2788, 7816), (3908, 5576)]