21591258

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{857}}^1$

素因数の和:911

約数の個数: 64

約数和(自身を含む): 51891840

約数和(自身を除く): 30300582

約数列:

[1, 2, 3, 6, 13, 17, 19, 26, 34, 38, 39, 51, 57, 78, 102, 114, 221, 247, 323, 442, 494, 646, 663, 741, 857, 969, 1326, 1482, 1714, 1938, 2571, 4199, 5142, 8398, 11141, 12597, 14569, 16283, 22282, 25194, 29138, 32566, 33423, 43707, 48849, 66846, 87414, 97698, 189397, 211679, 276811, 378794, 423358, 553622, 568191, 635037, 830433, 1136382, 1270074, 1660866, 3598543, 7197086, 10795629, 21591258]

約数ペア:

[(1, 21591258), (2, 10795629), (3, 7197086), (6, 3598543), (13, 1660866), (17, 1270074), (19, 1136382), (26, 830433), (34, 635037), (38, 568191), (39, 553622), (51, 423358), (57, 378794), (78, 276811), (102, 211679), (114, 189397), (221, 97698), (247, 87414), (323, 66846), (442, 48849), (494, 43707), (646, 33423), (663, 32566), (741, 29138), (857, 25194), (969, 22282), (1326, 16283), (1482, 14569), (1714, 12597), (1938, 11141), (2571, 8398), (4199, 5142)]