20714540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13451}}^1$

素因数の和:13478

約数の個数: 48

約数和(自身を含む): 54238464

約数和(自身を除く): 33523924

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 13451, 26902, 53804, 67255, 94157, 134510, 147961, 188314, 269020, 295922, 376628, 470785, 591844, 739805, 941570, 1035727, 1479610, 1883140, 2071454, 2959220, 4142908, 5178635, 10357270, 20714540]

約数ペア:

[(1, 20714540), (2, 10357270), (4, 5178635), (5, 4142908), (7, 2959220), (10, 2071454), (11, 1883140), (14, 1479610), (20, 1035727), (22, 941570), (28, 739805), (35, 591844), (44, 470785), (55, 376628), (70, 295922), (77, 269020), (110, 188314), (140, 147961), (154, 134510), (220, 94157), (308, 67255), (385, 53804), (770, 26902), (1540, 13451)]