20506080

素因数分解:

$2^5\times 3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{359}}^1$

素因数の和:401

約数の個数: 192

約数和(自身を含む): 78382080

約数和(自身を除く): 57876000

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 17, 20, 21, 24, 28, 30, 32, 34, 35, 40, 42, 48, 51, 56, 60, 68, 70, 80, 84, 85, 96, 102, 105, 112, 119, 120, 136, 140, 160, 168, 170, 204, 210, 224, 238, 240, 255, 272, 280, 336, 340, 357, 359, 408, 420, 476, 480, 510, 544, 560, 595, 672, 680, 714, 718, 816, 840, 952, 1020, 1077, 1120, 1190, 1360, 1428, 1436, 1632, 1680, 1785, 1795, 1904, 2040, 2154, 2380, 2513, 2720, 2856, 2872, 3360, 3570, 3590, 3808, 4080, 4308, 4760, 5026, 5385, 5712, 5744, 6103, 7140, 7180, 7539, 8160, 8616, 9520, 10052, 10770, 11424, 11488, 12206, 12565, 14280, 14360, 15078, 17232, 18309, 19040, 20104, 21540, 24412, 25130, 28560, 28720, 30156, 30515, 34464, 36618, 37695, 40208, 42721, 43080, 48824, 50260, 57120, 57440, 60312, 61030, 73236, 75390, 80416, 85442, 86160, 91545, 97648, 100520, 120624, 122060, 128163, 146472, 150780, 170884, 172320, 183090, 195296, 201040, 213605, 241248, 244120, 256326, 292944, 301560, 341768, 366180, 402080, 427210, 488240, 512652, 585888, 603120, 640815, 683536, 732360, 854420, 976480, 1025304, 1206240, 1281630, 1367072, 1464720, 1708840, 2050608, 2563260, 2929440, 3417680, 4101216, 5126520, 6835360, 10253040, 20506080]

約数ペア:

[(1, 20506080), (2, 10253040), (3, 6835360), (4, 5126520), (5, 4101216), (6, 3417680), (7, 2929440), (8, 2563260), (10, 2050608), (12, 1708840), (14, 1464720), (15, 1367072), (16, 1281630), (17, 1206240), (20, 1025304), (21, 976480), (24, 854420), (28, 732360), (30, 683536), (32, 640815), (34, 603120), (35, 585888), (40, 512652), (42, 488240), (48, 427210), (51, 402080), (56, 366180), (60, 341768), (68, 301560), (70, 292944), (80, 256326), (84, 244120), (85, 241248), (96, 213605), (102, 201040), (105, 195296), (112, 183090), (119, 172320), (120, 170884), (136, 150780), (140, 146472), (160, 128163), (168, 122060), (170, 120624), (204, 100520), (210, 97648), (224, 91545), (238, 86160), (240, 85442), (255, 80416), (272, 75390), (280, 73236), (336, 61030), (340, 60312), (357, 57440), (359, 57120), (408, 50260), (420, 48824), (476, 43080), (480, 42721), (510, 40208), (544, 37695), (560, 36618), (595, 34464), (672, 30515), (680, 30156), (714, 28720), (718, 28560), (816, 25130), (840, 24412), (952, 21540), (1020, 20104), (1077, 19040), (1120, 18309), (1190, 17232), (1360, 15078), (1428, 14360), (1436, 14280), (1632, 12565), (1680, 12206), (1785, 11488), (1795, 11424), (1904, 10770), (2040, 10052), (2154, 9520), (2380, 8616), (2513, 8160), (2720, 7539), (2856, 7180), (2872, 7140), (3360, 6103), (3570, 5744), (3590, 5712), (3808, 5385), (4080, 5026), (4308, 4760)]