21372417

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{83}}^1$

素因数の和:140

約数の個数: 60

約数和(自身を含む): 37444176

約数和(自身を除く): 16071759

約数列:

[1, 3, 9, 11, 17, 27, 33, 51, 81, 83, 99, 153, 187, 249, 289, 297, 459, 561, 747, 867, 891, 913, 1377, 1411, 1683, 2241, 2601, 2739, 3179, 4233, 5049, 6723, 7803, 8217, 9537, 12699, 15147, 15521, 23409, 23987, 24651, 28611, 38097, 46563, 71961, 73953, 85833, 114291, 139689, 215883, 257499, 263857, 419067, 647649, 791571, 1257201, 1942947, 2374713, 7124139, 21372417]

約数ペア:

[(1, 21372417), (3, 7124139), (9, 2374713), (11, 1942947), (17, 1257201), (27, 791571), (33, 647649), (51, 419067), (81, 263857), (83, 257499), (99, 215883), (153, 139689), (187, 114291), (249, 85833), (289, 73953), (297, 71961), (459, 46563), (561, 38097), (747, 28611), (867, 24651), (891, 23987), (913, 23409), (1377, 15521), (1411, 15147), (1683, 12699), (2241, 9537), (2601, 8217), (2739, 7803), (3179, 6723), (4233, 5049)]