27891640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:173

約数の個数: 128

約数和(自身を含む): 77137920

約数和(自身を除く): 49246280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 46, 56, 61, 70, 71, 92, 115, 122, 140, 142, 161, 184, 230, 244, 280, 284, 305, 322, 355, 427, 460, 488, 497, 568, 610, 644, 710, 805, 854, 920, 994, 1220, 1288, 1403, 1420, 1610, 1633, 1708, 1988, 2135, 2440, 2485, 2806, 2840, 3220, 3266, 3416, 3976, 4270, 4331, 4970, 5612, 6440, 6532, 7015, 8165, 8540, 8662, 9821, 9940, 11224, 11431, 13064, 14030, 16330, 17080, 17324, 19642, 19880, 21655, 22862, 28060, 30317, 32660, 34648, 39284, 43310, 45724, 49105, 56120, 57155, 60634, 65320, 78568, 86620, 91448, 98210, 99613, 114310, 121268, 151585, 173240, 196420, 199226, 228620, 242536, 303170, 392840, 398452, 457240, 498065, 606340, 697291, 796904, 996130, 1212680, 1394582, 1992260, 2789164, 3486455, 3984520, 5578328, 6972910, 13945820, 27891640]

約数ペア:

[(1, 27891640), (2, 13945820), (4, 6972910), (5, 5578328), (7, 3984520), (8, 3486455), (10, 2789164), (14, 1992260), (20, 1394582), (23, 1212680), (28, 996130), (35, 796904), (40, 697291), (46, 606340), (56, 498065), (61, 457240), (70, 398452), (71, 392840), (92, 303170), (115, 242536), (122, 228620), (140, 199226), (142, 196420), (161, 173240), (184, 151585), (230, 121268), (244, 114310), (280, 99613), (284, 98210), (305, 91448), (322, 86620), (355, 78568), (427, 65320), (460, 60634), (488, 57155), (497, 56120), (568, 49105), (610, 45724), (644, 43310), (710, 39284), (805, 34648), (854, 32660), (920, 30317), (994, 28060), (1220, 22862), (1288, 21655), (1403, 19880), (1420, 19642), (1610, 17324), (1633, 17080), (1708, 16330), (1988, 14030), (2135, 13064), (2440, 11431), (2485, 11224), (2806, 9940), (2840, 9821), (3220, 8662), (3266, 8540), (3416, 8165), (3976, 7015), (4270, 6532), (4331, 6440), (4970, 5612)]