20525120

素因数分解:

$2^6\times 5^1\times 7^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1$

素因数の和:66

約数の個数: 224

約数和(自身を含む): 65836800

約数和(自身を除く): 45311680

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 17, 20, 22, 28, 32, 34, 35, 40, 44, 49, 55, 56, 64, 68, 70, 77, 80, 85, 88, 98, 110, 112, 119, 136, 140, 154, 160, 170, 176, 187, 196, 220, 224, 238, 245, 272, 280, 308, 320, 340, 343, 352, 374, 385, 392, 440, 448, 476, 490, 539, 544, 560, 595, 616, 680, 686, 704, 748, 770, 784, 833, 880, 935, 952, 980, 1078, 1088, 1120, 1190, 1232, 1309, 1360, 1372, 1496, 1540, 1568, 1666, 1715, 1760, 1870, 1904, 1960, 2156, 2240, 2380, 2464, 2618, 2695, 2720, 2744, 2992, 3080, 3136, 3332, 3430, 3520, 3740, 3773, 3808, 3920, 4165, 4312, 4760, 4928, 5236, 5390, 5440, 5488, 5831, 5984, 6160, 6545, 6664, 6860, 7480, 7546, 7616, 7840, 8330, 8624, 9163, 9520, 10472, 10780, 10976, 11662, 11968, 12320, 13090, 13328, 13720, 14960, 15092, 15680, 16660, 17248, 18326, 18865, 19040, 20944, 21560, 21952, 23324, 24640, 26180, 26656, 27440, 29155, 29920, 30184, 33320, 34496, 36652, 37730, 38080, 41888, 43120, 45815, 46648, 52360, 53312, 54880, 58310, 59840, 60368, 64141, 66640, 73304, 75460, 83776, 86240, 91630, 93296, 104720, 109760, 116620, 120736, 128282, 133280, 146608, 150920, 172480, 183260, 186592, 209440, 233240, 241472, 256564, 266560, 293216, 301840, 320705, 366520, 373184, 418880, 466480, 513128, 586432, 603680, 641410, 733040, 932960, 1026256, 1207360, 1282820, 1466080, 1865920, 2052512, 2565640, 2932160, 4105024, 5131280, 10262560, 20525120]

約数ペア:

[(1, 20525120), (2, 10262560), (4, 5131280), (5, 4105024), (7, 2932160), (8, 2565640), (10, 2052512), (11, 1865920), (14, 1466080), (16, 1282820), (17, 1207360), (20, 1026256), (22, 932960), (28, 733040), (32, 641410), (34, 603680), (35, 586432), (40, 513128), (44, 466480), (49, 418880), (55, 373184), (56, 366520), (64, 320705), (68, 301840), (70, 293216), (77, 266560), (80, 256564), (85, 241472), (88, 233240), (98, 209440), (110, 186592), (112, 183260), (119, 172480), (136, 150920), (140, 146608), (154, 133280), (160, 128282), (170, 120736), (176, 116620), (187, 109760), (196, 104720), (220, 93296), (224, 91630), (238, 86240), (245, 83776), (272, 75460), (280, 73304), (308, 66640), (320, 64141), (340, 60368), (343, 59840), (352, 58310), (374, 54880), (385, 53312), (392, 52360), (440, 46648), (448, 45815), (476, 43120), (490, 41888), (539, 38080), (544, 37730), (560, 36652), (595, 34496), (616, 33320), (680, 30184), (686, 29920), (704, 29155), (748, 27440), (770, 26656), (784, 26180), (833, 24640), (880, 23324), (935, 21952), (952, 21560), (980, 20944), (1078, 19040), (1088, 18865), (1120, 18326), (1190, 17248), (1232, 16660), (1309, 15680), (1360, 15092), (1372, 14960), (1496, 13720), (1540, 13328), (1568, 13090), (1666, 12320), (1715, 11968), (1760, 11662), (1870, 10976), (1904, 10780), (1960, 10472), (2156, 9520), (2240, 9163), (2380, 8624), (2464, 8330), (2618, 7840), (2695, 7616), (2720, 7546), (2744, 7480), (2992, 6860), (3080, 6664), (3136, 6545), (3332, 6160), (3430, 5984), (3520, 5831), (3740, 5488), (3773, 5440), (3808, 5390), (3920, 5236), (4165, 4928), (4312, 4760)]