19101720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{499}}^1$

素因数の和:553

約数の個数: 128

約数和(自身を含む): 64800000

約数和(自身を除く): 45698280

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 29, 30, 33, 40, 44, 55, 58, 60, 66, 87, 88, 110, 116, 120, 132, 145, 165, 174, 220, 232, 264, 290, 319, 330, 348, 435, 440, 499, 580, 638, 660, 696, 870, 957, 998, 1160, 1276, 1320, 1497, 1595, 1740, 1914, 1996, 2495, 2552, 2994, 3190, 3480, 3828, 3992, 4785, 4990, 5489, 5988, 6380, 7485, 7656, 9570, 9980, 10978, 11976, 12760, 14471, 14970, 16467, 19140, 19960, 21956, 27445, 28942, 29940, 32934, 38280, 43413, 43912, 54890, 57884, 59880, 65868, 72355, 82335, 86826, 109780, 115768, 131736, 144710, 159181, 164670, 173652, 217065, 219560, 289420, 318362, 329340, 347304, 434130, 477543, 578840, 636724, 658680, 795905, 868260, 955086, 1273448, 1591810, 1736520, 1910172, 2387715, 3183620, 3820344, 4775430, 6367240, 9550860, 19101720]

約数ペア:

[(1, 19101720), (2, 9550860), (3, 6367240), (4, 4775430), (5, 3820344), (6, 3183620), (8, 2387715), (10, 1910172), (11, 1736520), (12, 1591810), (15, 1273448), (20, 955086), (22, 868260), (24, 795905), (29, 658680), (30, 636724), (33, 578840), (40, 477543), (44, 434130), (55, 347304), (58, 329340), (60, 318362), (66, 289420), (87, 219560), (88, 217065), (110, 173652), (116, 164670), (120, 159181), (132, 144710), (145, 131736), (165, 115768), (174, 109780), (220, 86826), (232, 82335), (264, 72355), (290, 65868), (319, 59880), (330, 57884), (348, 54890), (435, 43912), (440, 43413), (499, 38280), (580, 32934), (638, 29940), (660, 28942), (696, 27445), (870, 21956), (957, 19960), (998, 19140), (1160, 16467), (1276, 14970), (1320, 14471), (1497, 12760), (1595, 11976), (1740, 10978), (1914, 9980), (1996, 9570), (2495, 7656), (2552, 7485), (2994, 6380), (3190, 5988), (3480, 5489), (3828, 4990), (3992, 4785)]