20178886

素因数分解:

$2^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{337}}^1$

素因数の和:413

約数の個数: 48

約数和(自身を含む): 38840256

約数和(自身を除く): 18661370

約数列:

[1, 2, 7, 13, 14, 26, 47, 49, 91, 94, 98, 182, 329, 337, 611, 637, 658, 674, 1222, 1274, 2303, 2359, 4277, 4381, 4606, 4718, 8554, 8762, 15839, 16513, 29939, 30667, 31678, 33026, 59878, 61334, 110873, 205907, 214669, 221746, 411814, 429338, 776111, 1441349, 1552222, 2882698, 10089443, 20178886]

約数ペア:

[(1, 20178886), (2, 10089443), (7, 2882698), (13, 1552222), (14, 1441349), (26, 776111), (47, 429338), (49, 411814), (91, 221746), (94, 214669), (98, 205907), (182, 110873), (329, 61334), (337, 59878), (611, 33026), (637, 31678), (658, 30667), (674, 29939), (1222, 16513), (1274, 15839), (2303, 8762), (2359, 8554), (4277, 4718), (4381, 4606)]