20199858

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{127}}^1\times {\mathrm{541}}^1$

素因数の和:687

約数の個数: 48

約数和(自身を含む): 47453184

約数和(自身を除く): 27253326

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 49, 98, 127, 147, 254, 294, 381, 541, 762, 889, 1082, 1623, 1778, 2667, 3246, 3787, 5334, 6223, 7574, 11361, 12446, 18669, 22722, 26509, 37338, 53018, 68707, 79527, 137414, 159054, 206121, 412242, 480949, 961898, 1442847, 2885694, 3366643, 6733286, 10099929, 20199858]

約数ペア:

[(1, 20199858), (2, 10099929), (3, 6733286), (6, 3366643), (7, 2885694), (14, 1442847), (21, 961898), (42, 480949), (49, 412242), (98, 206121), (127, 159054), (147, 137414), (254, 79527), (294, 68707), (381, 53018), (541, 37338), (762, 26509), (889, 22722), (1082, 18669), (1623, 12446), (1778, 11361), (2667, 7574), (3246, 6223), (3787, 5334)]