21179158

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{149}}^1$

素因数の和:253

約数の個数: 64

約数和(自身を含む): 43545600

約数和(自身を除く): 22366442

約数列:

[1, 2, 7, 11, 13, 14, 22, 26, 71, 77, 91, 142, 143, 149, 154, 182, 286, 298, 497, 781, 923, 994, 1001, 1043, 1562, 1639, 1846, 1937, 2002, 2086, 3278, 3874, 5467, 6461, 10153, 10579, 10934, 11473, 12922, 13559, 20306, 21158, 21307, 22946, 27118, 42614, 71071, 74053, 116369, 137527, 142142, 148106, 149149, 232738, 275054, 298298, 814583, 962689, 1512797, 1629166, 1925378, 3025594, 10589579, 21179158]

約数ペア:

[(1, 21179158), (2, 10589579), (7, 3025594), (11, 1925378), (13, 1629166), (14, 1512797), (22, 962689), (26, 814583), (71, 298298), (77, 275054), (91, 232738), (142, 149149), (143, 148106), (149, 142142), (154, 137527), (182, 116369), (286, 74053), (298, 71071), (497, 42614), (781, 27118), (923, 22946), (994, 21307), (1001, 21158), (1043, 20306), (1562, 13559), (1639, 12922), (1846, 11473), (1937, 10934), (2002, 10579), (2086, 10153), (3278, 6461), (3874, 5467)]