19858228

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{127}}^1$

素因数の和:272

約数の個数: 48

約数和(自身を含む): 39337984

約数和(自身を除く): 19479756

約数列:

[1, 2, 4, 13, 26, 31, 52, 62, 97, 124, 127, 194, 254, 388, 403, 508, 806, 1261, 1612, 1651, 2522, 3007, 3302, 3937, 5044, 6014, 6604, 7874, 12028, 12319, 15748, 24638, 39091, 49276, 51181, 78182, 102362, 156364, 160147, 204724, 320294, 381889, 640588, 763778, 1527556, 4964557, 9929114, 19858228]

約数ペア:

[(1, 19858228), (2, 9929114), (4, 4964557), (13, 1527556), (26, 763778), (31, 640588), (52, 381889), (62, 320294), (97, 204724), (124, 160147), (127, 156364), (194, 102362), (254, 78182), (388, 51181), (403, 49276), (508, 39091), (806, 24638), (1261, 15748), (1612, 12319), (1651, 12028), (2522, 7874), (3007, 6604), (3302, 6014), (3937, 5044)]