21707049

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{307}}^1$

素因数の和:374

約数の個数: 48

約数和(自身を含む): 37359168

約数和(自身を除く): 15652119

約数列:

[1, 3, 7, 13, 21, 37, 39, 49, 91, 111, 147, 259, 273, 307, 481, 637, 777, 921, 1443, 1813, 1911, 2149, 3367, 3991, 5439, 6447, 10101, 11359, 11973, 15043, 23569, 27937, 34077, 45129, 70707, 79513, 83811, 147667, 195559, 238539, 443001, 556591, 586677, 1033669, 1669773, 3101007, 7235683, 21707049]

約数ペア:

[(1, 21707049), (3, 7235683), (7, 3101007), (13, 1669773), (21, 1033669), (37, 586677), (39, 556591), (49, 443001), (91, 238539), (111, 195559), (147, 147667), (259, 83811), (273, 79513), (307, 70707), (481, 45129), (637, 34077), (777, 27937), (921, 23569), (1443, 15043), (1813, 11973), (1911, 11359), (2149, 10101), (3367, 6447), (3991, 5439)]