21496959

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{241}}^1$

素因数の和:328

約数の個数: 48

約数和(自身を含む): 36694944

約数和(自身を除く): 15197985

約数列:

[1, 3, 9, 11, 17, 33, 51, 53, 99, 153, 159, 187, 241, 477, 561, 583, 723, 901, 1683, 1749, 2169, 2651, 2703, 4097, 5247, 7953, 8109, 9911, 12291, 12773, 23859, 29733, 36873, 38319, 45067, 89199, 114957, 135201, 140503, 217141, 405603, 421509, 651423, 1264527, 1954269, 2388551, 7165653, 21496959]

約数ペア:

[(1, 21496959), (3, 7165653), (9, 2388551), (11, 1954269), (17, 1264527), (33, 651423), (51, 421509), (53, 405603), (99, 217141), (153, 140503), (159, 135201), (187, 114957), (241, 89199), (477, 45067), (561, 38319), (583, 36873), (723, 29733), (901, 23859), (1683, 12773), (1749, 12291), (2169, 9911), (2651, 8109), (2703, 7953), (4097, 5247)]