21020272

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{14437}}^1$

素因数の和:14465

約数の個数: 40

約数和(自身を含む): 50128736

約数和(自身を除く): 29108464

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 182, 208, 364, 728, 1456, 14437, 28874, 57748, 101059, 115496, 187681, 202118, 230992, 375362, 404236, 750724, 808472, 1313767, 1501448, 1616944, 2627534, 3002896, 5255068, 10510136, 21020272]

約数ペア:

[(1, 21020272), (2, 10510136), (4, 5255068), (7, 3002896), (8, 2627534), (13, 1616944), (14, 1501448), (16, 1313767), (26, 808472), (28, 750724), (52, 404236), (56, 375362), (91, 230992), (104, 202118), (112, 187681), (182, 115496), (208, 101059), (364, 57748), (728, 28874), (1456, 14437)]