202080800

素因数分解:

$2^5\times 5^2\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{101}}^1$

素因数の和:223

約数の個数: 144

約数和(自身を含む): 518732424

約数和(自身を除く): 316651624

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 41, 50, 61, 80, 82, 100, 101, 122, 160, 164, 200, 202, 205, 244, 305, 328, 400, 404, 410, 488, 505, 610, 656, 800, 808, 820, 976, 1010, 1025, 1220, 1312, 1525, 1616, 1640, 1952, 2020, 2050, 2440, 2501, 2525, 3050, 3232, 3280, 4040, 4100, 4141, 4880, 5002, 5050, 6100, 6161, 6560, 8080, 8200, 8282, 9760, 10004, 10100, 12200, 12322, 12505, 16160, 16400, 16564, 20008, 20200, 20705, 24400, 24644, 25010, 30805, 32800, 33128, 40016, 40400, 41410, 48800, 49288, 50020, 61610, 62525, 66256, 80032, 80800, 82820, 98576, 100040, 103525, 123220, 125050, 132512, 154025, 165640, 197152, 200080, 207050, 246440, 250100, 252601, 308050, 331280, 400160, 414100, 492880, 500200, 505202, 616100, 662560, 828200, 985760, 1000400, 1010404, 1232200, 1263005, 1656400, 2000800, 2020808, 2464400, 2526010, 3312800, 4041616, 4928800, 5052020, 6315025, 8083232, 10104040, 12630050, 20208080, 25260100, 40416160, 50520200, 101040400, 202080800]

約数ペア:

[(1, 202080800), (2, 101040400), (4, 50520200), (5, 40416160), (8, 25260100), (10, 20208080), (16, 12630050), (20, 10104040), (25, 8083232), (32, 6315025), (40, 5052020), (41, 4928800), (50, 4041616), (61, 3312800), (80, 2526010), (82, 2464400), (100, 2020808), (101, 2000800), (122, 1656400), (160, 1263005), (164, 1232200), (200, 1010404), (202, 1000400), (205, 985760), (244, 828200), (305, 662560), (328, 616100), (400, 505202), (404, 500200), (410, 492880), (488, 414100), (505, 400160), (610, 331280), (656, 308050), (800, 252601), (808, 250100), (820, 246440), (976, 207050), (1010, 200080), (1025, 197152), (1220, 165640), (1312, 154025), (1525, 132512), (1616, 125050), (1640, 123220), (1952, 103525), (2020, 100040), (2050, 98576), (2440, 82820), (2501, 80800), (2525, 80032), (3050, 66256), (3232, 62525), (3280, 61610), (4040, 50020), (4100, 49288), (4141, 48800), (4880, 41410), (5002, 40400), (5050, 40016), (6100, 33128), (6161, 32800), (6560, 30805), (8080, 25010), (8200, 24644), (8282, 24400), (9760, 20705), (10004, 20200), (10100, 20008), (12200, 16564), (12322, 16400), (12505, 16160)]