28921760

素因数分解:

$2^5\times 5^1\times 7^3\times {\mathrm{17}}^1\times {\mathrm{31}}^1$

素因数の和:84

約数の個数: 192

約数和(自身を含む): 87091200

約数和(自身を除く): 58169440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 28, 31, 32, 34, 35, 40, 49, 56, 62, 68, 70, 80, 85, 98, 112, 119, 124, 136, 140, 155, 160, 170, 196, 217, 224, 238, 245, 248, 272, 280, 310, 340, 343, 392, 434, 476, 490, 496, 527, 544, 560, 595, 620, 680, 686, 784, 833, 868, 952, 980, 992, 1054, 1085, 1120, 1190, 1240, 1360, 1372, 1519, 1568, 1666, 1715, 1736, 1904, 1960, 2108, 2170, 2380, 2480, 2635, 2720, 2744, 3038, 3332, 3430, 3472, 3689, 3808, 3920, 4165, 4216, 4340, 4760, 4960, 5270, 5488, 5831, 6076, 6664, 6860, 6944, 7378, 7595, 7840, 8330, 8432, 8680, 9520, 10540, 10633, 10976, 11662, 12152, 13328, 13720, 14756, 15190, 16660, 16864, 17360, 18445, 19040, 21080, 21266, 23324, 24304, 25823, 26656, 27440, 29155, 29512, 30380, 33320, 34720, 36890, 42160, 42532, 46648, 48608, 51646, 53165, 54880, 58310, 59024, 60760, 66640, 73780, 84320, 85064, 93296, 103292, 106330, 116620, 118048, 121520, 129115, 133280, 147560, 170128, 180761, 186592, 206584, 212660, 233240, 243040, 258230, 295120, 340256, 361522, 413168, 425320, 466480, 516460, 590240, 723044, 826336, 850640, 903805, 932960, 1032920, 1446088, 1701280, 1807610, 2065840, 2892176, 3615220, 4131680, 5784352, 7230440, 14460880, 28921760]

約数ペア:

[(1, 28921760), (2, 14460880), (4, 7230440), (5, 5784352), (7, 4131680), (8, 3615220), (10, 2892176), (14, 2065840), (16, 1807610), (17, 1701280), (20, 1446088), (28, 1032920), (31, 932960), (32, 903805), (34, 850640), (35, 826336), (40, 723044), (49, 590240), (56, 516460), (62, 466480), (68, 425320), (70, 413168), (80, 361522), (85, 340256), (98, 295120), (112, 258230), (119, 243040), (124, 233240), (136, 212660), (140, 206584), (155, 186592), (160, 180761), (170, 170128), (196, 147560), (217, 133280), (224, 129115), (238, 121520), (245, 118048), (248, 116620), (272, 106330), (280, 103292), (310, 93296), (340, 85064), (343, 84320), (392, 73780), (434, 66640), (476, 60760), (490, 59024), (496, 58310), (527, 54880), (544, 53165), (560, 51646), (595, 48608), (620, 46648), (680, 42532), (686, 42160), (784, 36890), (833, 34720), (868, 33320), (952, 30380), (980, 29512), (992, 29155), (1054, 27440), (1085, 26656), (1120, 25823), (1190, 24304), (1240, 23324), (1360, 21266), (1372, 21080), (1519, 19040), (1568, 18445), (1666, 17360), (1715, 16864), (1736, 16660), (1904, 15190), (1960, 14756), (2108, 13720), (2170, 13328), (2380, 12152), (2480, 11662), (2635, 10976), (2720, 10633), (2744, 10540), (3038, 9520), (3332, 8680), (3430, 8432), (3472, 8330), (3689, 7840), (3808, 7595), (3920, 7378), (4165, 6944), (4216, 6860), (4340, 6664), (4760, 6076), (4960, 5831), (5270, 5488)]