21686720

素因数分解:

$2^6\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{101}}^1$

素因数の和:190

約数の個数: 112

約数和(自身を含む): 57826656

約数和(自身を除く): 36139936

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 61, 64, 80, 88, 101, 110, 122, 160, 176, 202, 220, 244, 305, 320, 352, 404, 440, 488, 505, 610, 671, 704, 808, 880, 976, 1010, 1111, 1220, 1342, 1616, 1760, 1952, 2020, 2222, 2440, 2684, 3232, 3355, 3520, 3904, 4040, 4444, 4880, 5368, 5555, 6161, 6464, 6710, 8080, 8888, 9760, 10736, 11110, 12322, 13420, 16160, 17776, 19520, 21472, 22220, 24644, 26840, 30805, 32320, 35552, 42944, 44440, 49288, 53680, 61610, 67771, 71104, 88880, 98576, 107360, 123220, 135542, 177760, 197152, 214720, 246440, 271084, 338855, 355520, 394304, 492880, 542168, 677710, 985760, 1084336, 1355420, 1971520, 2168672, 2710840, 4337344, 5421680, 10843360, 21686720]

約数ペア:

[(1, 21686720), (2, 10843360), (4, 5421680), (5, 4337344), (8, 2710840), (10, 2168672), (11, 1971520), (16, 1355420), (20, 1084336), (22, 985760), (32, 677710), (40, 542168), (44, 492880), (55, 394304), (61, 355520), (64, 338855), (80, 271084), (88, 246440), (101, 214720), (110, 197152), (122, 177760), (160, 135542), (176, 123220), (202, 107360), (220, 98576), (244, 88880), (305, 71104), (320, 67771), (352, 61610), (404, 53680), (440, 49288), (488, 44440), (505, 42944), (610, 35552), (671, 32320), (704, 30805), (808, 26840), (880, 24644), (976, 22220), (1010, 21472), (1111, 19520), (1220, 17776), (1342, 16160), (1616, 13420), (1760, 12322), (1952, 11110), (2020, 10736), (2222, 9760), (2440, 8888), (2684, 8080), (3232, 6710), (3355, 6464), (3520, 6161), (3904, 5555), (4040, 5368), (4444, 4880)]