18465920

素因数分解:

$2^7\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1$

素因数の和:134

約数の個数: 128

約数和(自身を含む): 50086080

約数和(自身を除く): 31620160

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 43, 44, 55, 61, 64, 80, 86, 88, 110, 122, 128, 160, 172, 176, 215, 220, 244, 305, 320, 344, 352, 430, 440, 473, 488, 610, 640, 671, 688, 704, 860, 880, 946, 976, 1220, 1342, 1376, 1408, 1720, 1760, 1892, 1952, 2365, 2440, 2623, 2684, 2752, 3355, 3440, 3520, 3784, 3904, 4730, 4880, 5246, 5368, 5504, 6710, 6880, 7040, 7568, 7808, 9460, 9760, 10492, 10736, 13115, 13420, 13760, 15136, 18920, 19520, 20984, 21472, 26230, 26840, 27520, 28853, 30272, 37840, 39040, 41968, 42944, 52460, 53680, 57706, 60544, 75680, 83936, 85888, 104920, 107360, 115412, 144265, 151360, 167872, 209840, 214720, 230824, 288530, 302720, 335744, 419680, 429440, 461648, 577060, 839360, 923296, 1154120, 1678720, 1846592, 2308240, 3693184, 4616480, 9232960, 18465920]

約数ペア:

[(1, 18465920), (2, 9232960), (4, 4616480), (5, 3693184), (8, 2308240), (10, 1846592), (11, 1678720), (16, 1154120), (20, 923296), (22, 839360), (32, 577060), (40, 461648), (43, 429440), (44, 419680), (55, 335744), (61, 302720), (64, 288530), (80, 230824), (86, 214720), (88, 209840), (110, 167872), (122, 151360), (128, 144265), (160, 115412), (172, 107360), (176, 104920), (215, 85888), (220, 83936), (244, 75680), (305, 60544), (320, 57706), (344, 53680), (352, 52460), (430, 42944), (440, 41968), (473, 39040), (488, 37840), (610, 30272), (640, 28853), (671, 27520), (688, 26840), (704, 26230), (860, 21472), (880, 20984), (946, 19520), (976, 18920), (1220, 15136), (1342, 13760), (1376, 13420), (1408, 13115), (1720, 10736), (1760, 10492), (1892, 9760), (1952, 9460), (2365, 7808), (2440, 7568), (2623, 7040), (2684, 6880), (2752, 6710), (3355, 5504), (3440, 5368), (3520, 5246), (3784, 4880), (3904, 4730)]