21652728

素因数分解:

$2^3\times 3^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1\times {\mathrm{131}}^1$

素因数の和:308

約数の個数: 64

約数和(自身を含む): 55883520

約数和(自身を除く): 34230792

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 71, 97, 131, 142, 194, 213, 262, 284, 291, 388, 393, 426, 524, 568, 582, 776, 786, 852, 1048, 1164, 1572, 1704, 2328, 3144, 6887, 9301, 12707, 13774, 18602, 20661, 25414, 27548, 27903, 37204, 38121, 41322, 50828, 55096, 55806, 74408, 76242, 82644, 101656, 111612, 152484, 165288, 223224, 304968, 902197, 1804394, 2706591, 3608788, 5413182, 7217576, 10826364, 21652728]

約数ペア:

[(1, 21652728), (2, 10826364), (3, 7217576), (4, 5413182), (6, 3608788), (8, 2706591), (12, 1804394), (24, 902197), (71, 304968), (97, 223224), (131, 165288), (142, 152484), (194, 111612), (213, 101656), (262, 82644), (284, 76242), (291, 74408), (388, 55806), (393, 55096), (426, 50828), (524, 41322), (568, 38121), (582, 37204), (776, 27903), (786, 27548), (852, 25414), (1048, 20661), (1164, 18602), (1572, 13774), (1704, 12707), (2328, 9301), (3144, 6887)]