21268744

素因数分解:

$2^3\times 7^3\times {\mathrm{23}}^1\times {\mathrm{337}}^1$

素因数の和:387

約数の個数: 64

約数和(自身を含む): 48672000

約数和(自身を除く): 27403256

約数列:

[1, 2, 4, 7, 8, 14, 23, 28, 46, 49, 56, 92, 98, 161, 184, 196, 322, 337, 343, 392, 644, 674, 686, 1127, 1288, 1348, 1372, 2254, 2359, 2696, 2744, 4508, 4718, 7751, 7889, 9016, 9436, 15502, 15778, 16513, 18872, 31004, 31556, 33026, 54257, 62008, 63112, 66052, 108514, 115591, 132104, 217028, 231182, 379799, 434056, 462364, 759598, 924728, 1519196, 2658593, 3038392, 5317186, 10634372, 21268744]

約数ペア:

[(1, 21268744), (2, 10634372), (4, 5317186), (7, 3038392), (8, 2658593), (14, 1519196), (23, 924728), (28, 759598), (46, 462364), (49, 434056), (56, 379799), (92, 231182), (98, 217028), (161, 132104), (184, 115591), (196, 108514), (322, 66052), (337, 63112), (343, 62008), (392, 54257), (644, 33026), (674, 31556), (686, 31004), (1127, 18872), (1288, 16513), (1348, 15778), (1372, 15502), (2254, 9436), (2359, 9016), (2696, 7889), (2744, 7751), (4508, 4718)]