19963185

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{647}}^1$

素因数の和:694

約数の個数: 48

約数和(自身を含む): 37231488

約数和(自身を除く): 17268303

約数列:

[1, 3, 5, 11, 15, 17, 33, 51, 55, 85, 121, 165, 187, 255, 363, 561, 605, 647, 935, 1815, 1941, 2057, 2805, 3235, 6171, 7117, 9705, 10285, 10999, 21351, 30855, 32997, 35585, 54995, 78287, 106755, 120989, 164985, 234861, 362967, 391435, 604945, 1174305, 1330879, 1814835, 3992637, 6654395, 19963185]

約数ペア:

[(1, 19963185), (3, 6654395), (5, 3992637), (11, 1814835), (15, 1330879), (17, 1174305), (33, 604945), (51, 391435), (55, 362967), (85, 234861), (121, 164985), (165, 120989), (187, 106755), (255, 78287), (363, 54995), (561, 35585), (605, 32997), (647, 30855), (935, 21351), (1815, 10999), (1941, 10285), (2057, 9705), (2805, 7117), (3235, 6171)]