20030780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13007}}^1$

素因数の和:13034

約数の個数: 48

約数和(自身を含む): 52448256

約数和(自身を除く): 32417476

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, 13007, 26014, 52028, 65035, 91049, 130070, 143077, 182098, 260140, 286154, 364196, 455245, 572308, 715385, 910490, 1001539, 1430770, 1820980, 2003078, 2861540, 4006156, 5007695, 10015390, 20030780]

約数ペア:

[(1, 20030780), (2, 10015390), (4, 5007695), (5, 4006156), (7, 2861540), (10, 2003078), (11, 1820980), (14, 1430770), (20, 1001539), (22, 910490), (28, 715385), (35, 572308), (44, 455245), (55, 364196), (70, 286154), (77, 260140), (110, 182098), (140, 143077), (154, 130070), (220, 91049), (308, 65035), (385, 52028), (770, 26014), (1540, 13007)]