28213640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{337}}^1$

素因数の和:391

約数の個数: 128

約数和(自身を含む): 81768960

約数和(自身を除く): 53555320

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 23, 26, 28, 35, 40, 46, 52, 56, 65, 70, 91, 92, 104, 115, 130, 140, 161, 182, 184, 230, 260, 280, 299, 322, 337, 364, 455, 460, 520, 598, 644, 674, 728, 805, 910, 920, 1196, 1288, 1348, 1495, 1610, 1685, 1820, 2093, 2359, 2392, 2696, 2990, 3220, 3370, 3640, 4186, 4381, 4718, 5980, 6440, 6740, 7751, 8372, 8762, 9436, 10465, 11795, 11960, 13480, 15502, 16744, 17524, 18872, 20930, 21905, 23590, 30667, 31004, 35048, 38755, 41860, 43810, 47180, 54257, 61334, 62008, 77510, 83720, 87620, 94360, 100763, 108514, 122668, 153335, 155020, 175240, 201526, 217028, 245336, 271285, 306670, 310040, 403052, 434056, 503815, 542570, 613340, 705341, 806104, 1007630, 1085140, 1226680, 1410682, 2015260, 2170280, 2821364, 3526705, 4030520, 5642728, 7053410, 14106820, 28213640]

約数ペア:

[(1, 28213640), (2, 14106820), (4, 7053410), (5, 5642728), (7, 4030520), (8, 3526705), (10, 2821364), (13, 2170280), (14, 2015260), (20, 1410682), (23, 1226680), (26, 1085140), (28, 1007630), (35, 806104), (40, 705341), (46, 613340), (52, 542570), (56, 503815), (65, 434056), (70, 403052), (91, 310040), (92, 306670), (104, 271285), (115, 245336), (130, 217028), (140, 201526), (161, 175240), (182, 155020), (184, 153335), (230, 122668), (260, 108514), (280, 100763), (299, 94360), (322, 87620), (337, 83720), (364, 77510), (455, 62008), (460, 61334), (520, 54257), (598, 47180), (644, 43810), (674, 41860), (728, 38755), (805, 35048), (910, 31004), (920, 30667), (1196, 23590), (1288, 21905), (1348, 20930), (1495, 18872), (1610, 17524), (1685, 16744), (1820, 15502), (2093, 13480), (2359, 11960), (2392, 11795), (2696, 10465), (2990, 9436), (3220, 8762), (3370, 8372), (3640, 7751), (4186, 6740), (4381, 6440), (4718, 5980)]