20780490056

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{311}}^1\times {\mathrm{7333}}^1$

素因数の和:7734

約数の個数: 64

約数和(自身を含む): 42011498880

約数和(自身を除く): 21231008824

約数列:

[1, 2, 4, 8, 17, 34, 67, 68, 134, 136, 268, 311, 536, 622, 1139, 1244, 2278, 2488, 4556, 5287, 7333, 9112, 10574, 14666, 20837, 21148, 29332, 41674, 42296, 58664, 83348, 124661, 166696, 249322, 354229, 491311, 498644, 708458, 982622, 997288, 1416916, 1965244, 2280563, 2833832, 3930488, 4561126, 8352287, 9122252, 16704574, 18244504, 33409148, 38769571, 66818296, 77539142, 152797721, 155078284, 305595442, 310156568, 611190884, 1222381768, 2597561257, 5195122514, 10390245028, 20780490056]

約数ペア:

[(1, 20780490056), (2, 10390245028), (4, 5195122514), (8, 2597561257), (17, 1222381768), (34, 611190884), (67, 310156568), (68, 305595442), (134, 155078284), (136, 152797721), (268, 77539142), (311, 66818296), (536, 38769571), (622, 33409148), (1139, 18244504), (1244, 16704574), (2278, 9122252), (2488, 8352287), (4556, 4561126), (5287, 3930488), (7333, 2833832), (9112, 2280563), (10574, 1965244), (14666, 1416916), (20837, 997288), (21148, 982622), (29332, 708458), (41674, 498644), (42296, 491311), (58664, 354229), (83348, 249322), (124661, 166696)]