20207777380

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{199}}^1\times {\mathrm{103619}}^1$

素因数の和:103841

約数の個数: 72

約数和(自身を含む): 49613256000

約数和(自身を除く): 29405478620

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 199, 245, 398, 490, 796, 980, 995, 1393, 1990, 2786, 3980, 5572, 6965, 9751, 13930, 19502, 27860, 39004, 48755, 97510, 103619, 195020, 207238, 414476, 518095, 725333, 1036190, 1450666, 2072380, 2901332, 3626665, 5077331, 7253330, 10154662, 14506660, 20309324, 20620181, 25386655, 41240362, 50773310, 82480724, 101546620, 103100905, 144341267, 206201810, 288682534, 412403620, 577365068, 721706335, 1010388869, 1443412670, 2020777738, 2886825340, 4041555476, 5051944345, 10103888690, 20207777380]

約数ペア:

[(1, 20207777380), (2, 10103888690), (4, 5051944345), (5, 4041555476), (7, 2886825340), (10, 2020777738), (14, 1443412670), (20, 1010388869), (28, 721706335), (35, 577365068), (49, 412403620), (70, 288682534), (98, 206201810), (140, 144341267), (196, 103100905), (199, 101546620), (245, 82480724), (398, 50773310), (490, 41240362), (796, 25386655), (980, 20620181), (995, 20309324), (1393, 14506660), (1990, 10154662), (2786, 7253330), (3980, 5077331), (5572, 3626665), (6965, 2901332), (9751, 2072380), (13930, 1450666), (19502, 1036190), (27860, 725333), (39004, 518095), (48755, 414476), (97510, 207238), (103619, 195020)]