644860456

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{479}}^1\times {\mathrm{521}}^1$

素因数の和:1042

約数の個数: 64

約数和(自身を含む): 1353024000

約数和(自身を除く): 708163544

約数列:

[1, 2, 4, 8, 17, 19, 34, 38, 68, 76, 136, 152, 323, 479, 521, 646, 958, 1042, 1292, 1916, 2084, 2584, 3832, 4168, 8143, 8857, 9101, 9899, 16286, 17714, 18202, 19798, 32572, 35428, 36404, 39596, 65144, 70856, 72808, 79192, 154717, 168283, 249559, 309434, 336566, 499118, 618868, 673132, 998236, 1237736, 1346264, 1996472, 4242503, 4741621, 8485006, 9483242, 16970012, 18966484, 33940024, 37932968, 80607557, 161215114, 322430228, 644860456]

約数ペア:

[(1, 644860456), (2, 322430228), (4, 161215114), (8, 80607557), (17, 37932968), (19, 33940024), (34, 18966484), (38, 16970012), (68, 9483242), (76, 8485006), (136, 4741621), (152, 4242503), (323, 1996472), (479, 1346264), (521, 1237736), (646, 998236), (958, 673132), (1042, 618868), (1292, 499118), (1916, 336566), (2084, 309434), (2584, 249559), (3832, 168283), (4168, 154717), (8143, 79192), (8857, 72808), (9101, 70856), (9899, 65144), (16286, 39596), (17714, 36404), (18202, 35428), (19798, 32572)]