28012320

素因数分解:

$2^5\times 3^2\times 5^1\times 7^2\times {\mathrm{397}}^1$

素因数の和:432

約数の個数: 216

約数和(自身を含む): 111479004

約数和(自身を除く): 83466684

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 49, 56, 60, 63, 70, 72, 80, 84, 90, 96, 98, 105, 112, 120, 126, 140, 144, 147, 160, 168, 180, 196, 210, 224, 240, 245, 252, 280, 288, 294, 315, 336, 360, 392, 397, 420, 441, 480, 490, 504, 560, 588, 630, 672, 720, 735, 784, 794, 840, 882, 980, 1008, 1120, 1176, 1191, 1260, 1440, 1470, 1568, 1588, 1680, 1764, 1960, 1985, 2016, 2205, 2352, 2382, 2520, 2779, 2940, 3176, 3360, 3528, 3573, 3920, 3970, 4410, 4704, 4764, 5040, 5558, 5880, 5955, 6352, 7056, 7146, 7840, 7940, 8337, 8820, 9528, 10080, 11116, 11760, 11910, 12704, 13895, 14112, 14292, 15880, 16674, 17640, 17865, 19056, 19453, 22232, 23520, 23820, 25011, 27790, 28584, 31760, 33348, 35280, 35730, 38112, 38906, 41685, 44464, 47640, 50022, 55580, 57168, 58359, 63520, 66696, 70560, 71460, 77812, 83370, 88928, 95280, 97265, 100044, 111160, 114336, 116718, 125055, 133392, 142920, 155624, 166740, 175077, 190560, 194530, 200088, 222320, 233436, 250110, 266784, 285840, 291795, 311248, 333480, 350154, 389060, 400176, 444640, 466872, 500220, 571680, 583590, 622496, 666960, 700308, 778120, 800352, 875385, 933744, 1000440, 1167180, 1333920, 1400616, 1556240, 1750770, 1867488, 2000880, 2334360, 2801232, 3112480, 3501540, 4001760, 4668720, 5602464, 7003080, 9337440, 14006160, 28012320]

約数ペア:

[(1, 28012320), (2, 14006160), (3, 9337440), (4, 7003080), (5, 5602464), (6, 4668720), (7, 4001760), (8, 3501540), (9, 3112480), (10, 2801232), (12, 2334360), (14, 2000880), (15, 1867488), (16, 1750770), (18, 1556240), (20, 1400616), (21, 1333920), (24, 1167180), (28, 1000440), (30, 933744), (32, 875385), (35, 800352), (36, 778120), (40, 700308), (42, 666960), (45, 622496), (48, 583590), (49, 571680), (56, 500220), (60, 466872), (63, 444640), (70, 400176), (72, 389060), (80, 350154), (84, 333480), (90, 311248), (96, 291795), (98, 285840), (105, 266784), (112, 250110), (120, 233436), (126, 222320), (140, 200088), (144, 194530), (147, 190560), (160, 175077), (168, 166740), (180, 155624), (196, 142920), (210, 133392), (224, 125055), (240, 116718), (245, 114336), (252, 111160), (280, 100044), (288, 97265), (294, 95280), (315, 88928), (336, 83370), (360, 77812), (392, 71460), (397, 70560), (420, 66696), (441, 63520), (480, 58359), (490, 57168), (504, 55580), (560, 50022), (588, 47640), (630, 44464), (672, 41685), (720, 38906), (735, 38112), (784, 35730), (794, 35280), (840, 33348), (882, 31760), (980, 28584), (1008, 27790), (1120, 25011), (1176, 23820), (1191, 23520), (1260, 22232), (1440, 19453), (1470, 19056), (1568, 17865), (1588, 17640), (1680, 16674), (1764, 15880), (1960, 14292), (1985, 14112), (2016, 13895), (2205, 12704), (2352, 11910), (2382, 11760), (2520, 11116), (2779, 10080), (2940, 9528), (3176, 8820), (3360, 8337), (3528, 7940), (3573, 7840), (3920, 7146), (3970, 7056), (4410, 6352), (4704, 5955), (4764, 5880), (5040, 5558)]