18647860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{12109}}^1$

素因数の和:12136

約数の個数: 48

約数和(自身を含む): 48827520

約数和(自身を除く): 30179660

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, 12109, 24218, 48436, 60545, 84763, 121090, 133199, 169526, 242180, 266398, 339052, 423815, 532796, 665995, 847630, 932393, 1331990, 1695260, 1864786, 2663980, 3729572, 4661965, 9323930, 18647860]

約数ペア:

[(1, 18647860), (2, 9323930), (4, 4661965), (5, 3729572), (7, 2663980), (10, 1864786), (11, 1695260), (14, 1331990), (20, 932393), (22, 847630), (28, 665995), (35, 532796), (44, 423815), (55, 339052), (70, 266398), (77, 242180), (110, 169526), (140, 133199), (154, 121090), (220, 84763), (308, 60545), (385, 48436), (770, 24218), (1540, 12109)]