21017458

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{653}}^1$

素因数の和:703

約数の個数: 48

約数和(自身を含む): 41751360

約数和(自身を除く): 20733902

約数列:

[1, 2, 7, 11, 14, 19, 22, 38, 77, 121, 133, 154, 209, 242, 266, 418, 653, 847, 1306, 1463, 1694, 2299, 2926, 4571, 4598, 7183, 9142, 12407, 14366, 16093, 24814, 32186, 50281, 79013, 86849, 100562, 136477, 158026, 173698, 272954, 553091, 955339, 1106182, 1501247, 1910678, 3002494, 10508729, 21017458]

約数ペア:

[(1, 21017458), (2, 10508729), (7, 3002494), (11, 1910678), (14, 1501247), (19, 1106182), (22, 955339), (38, 553091), (77, 272954), (121, 173698), (133, 158026), (154, 136477), (209, 100562), (242, 86849), (266, 79013), (418, 50281), (653, 32186), (847, 24814), (1306, 16093), (1463, 14366), (1694, 12407), (2299, 9142), (2926, 7183), (4571, 4598)]