28238940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{359}}^1$

素因数の和:416

約数の個数: 144

約数和(自身を含む): 94348800

約数和(自身を除く): 66109860

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 23, 30, 36, 38, 45, 46, 57, 60, 69, 76, 90, 92, 95, 114, 115, 138, 171, 180, 190, 207, 228, 230, 276, 285, 342, 345, 359, 380, 414, 437, 460, 570, 684, 690, 718, 828, 855, 874, 1035, 1077, 1140, 1311, 1380, 1436, 1710, 1748, 1795, 2070, 2154, 2185, 2622, 3231, 3420, 3590, 3933, 4140, 4308, 4370, 5244, 5385, 6462, 6555, 6821, 7180, 7866, 8257, 8740, 10770, 12924, 13110, 13642, 15732, 16155, 16514, 19665, 20463, 21540, 24771, 26220, 27284, 32310, 33028, 34105, 39330, 40926, 41285, 49542, 61389, 64620, 68210, 74313, 78660, 81852, 82570, 99084, 102315, 122778, 123855, 136420, 148626, 156883, 165140, 204630, 245556, 247710, 297252, 306945, 313766, 371565, 409260, 470649, 495420, 613890, 627532, 743130, 784415, 941298, 1227780, 1411947, 1486260, 1568830, 1882596, 2353245, 2823894, 3137660, 4706490, 5647788, 7059735, 9412980, 14119470, 28238940]

約数ペア:

[(1, 28238940), (2, 14119470), (3, 9412980), (4, 7059735), (5, 5647788), (6, 4706490), (9, 3137660), (10, 2823894), (12, 2353245), (15, 1882596), (18, 1568830), (19, 1486260), (20, 1411947), (23, 1227780), (30, 941298), (36, 784415), (38, 743130), (45, 627532), (46, 613890), (57, 495420), (60, 470649), (69, 409260), (76, 371565), (90, 313766), (92, 306945), (95, 297252), (114, 247710), (115, 245556), (138, 204630), (171, 165140), (180, 156883), (190, 148626), (207, 136420), (228, 123855), (230, 122778), (276, 102315), (285, 99084), (342, 82570), (345, 81852), (359, 78660), (380, 74313), (414, 68210), (437, 64620), (460, 61389), (570, 49542), (684, 41285), (690, 40926), (718, 39330), (828, 34105), (855, 33028), (874, 32310), (1035, 27284), (1077, 26220), (1140, 24771), (1311, 21540), (1380, 20463), (1436, 19665), (1710, 16514), (1748, 16155), (1795, 15732), (2070, 13642), (2154, 13110), (2185, 12924), (2622, 10770), (3231, 8740), (3420, 8257), (3590, 7866), (3933, 7180), (4140, 6821), (4308, 6555), (4370, 6462), (5244, 5385)]