204879920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{21521}}^1$

素因数の和:21558

約数の個数: 80

約数和(自身を含む): 576445248

約数和(自身を除く): 371565328

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 28, 34, 35, 40, 56, 68, 70, 80, 85, 112, 119, 136, 140, 170, 238, 272, 280, 340, 476, 560, 595, 680, 952, 1190, 1360, 1904, 2380, 4760, 9520, 21521, 43042, 86084, 107605, 150647, 172168, 215210, 301294, 344336, 365857, 430420, 602588, 731714, 753235, 860840, 1205176, 1463428, 1506470, 1721680, 1829285, 2410352, 2560999, 2926856, 3012940, 3658570, 5121998, 5853712, 6025880, 7317140, 10243996, 12051760, 12804995, 14634280, 20487992, 25609990, 29268560, 40975984, 51219980, 102439960, 204879920]

約数ペア:

[(1, 204879920), (2, 102439960), (4, 51219980), (5, 40975984), (7, 29268560), (8, 25609990), (10, 20487992), (14, 14634280), (16, 12804995), (17, 12051760), (20, 10243996), (28, 7317140), (34, 6025880), (35, 5853712), (40, 5121998), (56, 3658570), (68, 3012940), (70, 2926856), (80, 2560999), (85, 2410352), (112, 1829285), (119, 1721680), (136, 1506470), (140, 1463428), (170, 1205176), (238, 860840), (272, 753235), (280, 731714), (340, 602588), (476, 430420), (560, 365857), (595, 344336), (680, 301294), (952, 215210), (1190, 172168), (1360, 150647), (1904, 107605), (2380, 86084), (4760, 43042), (9520, 21521)]