1020487720

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{409}}^1$

素因数の和:520

約数の個数: 192

約数和(自身を含む): 2860488000

約数和(自身を除く): 1840000280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 19, 20, 28, 35, 38, 40, 49, 56, 67, 70, 76, 95, 98, 133, 134, 140, 152, 190, 196, 245, 266, 268, 280, 335, 380, 392, 409, 469, 490, 532, 536, 665, 670, 760, 818, 931, 938, 980, 1064, 1273, 1330, 1340, 1636, 1862, 1876, 1960, 2045, 2345, 2546, 2660, 2680, 2863, 3272, 3283, 3724, 3752, 4090, 4655, 4690, 5092, 5320, 5726, 6365, 6566, 7448, 7771, 8180, 8911, 9310, 9380, 10184, 11452, 12730, 13132, 14315, 15542, 16360, 16415, 17822, 18620, 18760, 20041, 22904, 25460, 26264, 27403, 28630, 31084, 32830, 35644, 37240, 38855, 40082, 44555, 50920, 54397, 54806, 57260, 62168, 62377, 65660, 71288, 77710, 80164, 89110, 100205, 108794, 109612, 114520, 124754, 131320, 137015, 155420, 160328, 178220, 191821, 200410, 217588, 219224, 249508, 271985, 274030, 310840, 311885, 356440, 380779, 383642, 400820, 435176, 499016, 520657, 543970, 548060, 623770, 761558, 767284, 801640, 959105, 1041314, 1087940, 1096120, 1247540, 1342747, 1523116, 1534568, 1903895, 1918210, 2082628, 2175880, 2495080, 2603285, 2685494, 3046232, 3644599, 3807790, 3836420, 4165256, 5206570, 5370988, 6713735, 7289198, 7615580, 7672840, 10413140, 10741976, 13427470, 14578396, 15231160, 18222995, 20826280, 25512193, 26854940, 29156792, 36445990, 51024386, 53709880, 72891980, 102048772, 127560965, 145783960, 204097544, 255121930, 510243860, 1020487720]

約数ペア:

[(1, 1020487720), (2, 510243860), (4, 255121930), (5, 204097544), (7, 145783960), (8, 127560965), (10, 102048772), (14, 72891980), (19, 53709880), (20, 51024386), (28, 36445990), (35, 29156792), (38, 26854940), (40, 25512193), (49, 20826280), (56, 18222995), (67, 15231160), (70, 14578396), (76, 13427470), (95, 10741976), (98, 10413140), (133, 7672840), (134, 7615580), (140, 7289198), (152, 6713735), (190, 5370988), (196, 5206570), (245, 4165256), (266, 3836420), (268, 3807790), (280, 3644599), (335, 3046232), (380, 2685494), (392, 2603285), (409, 2495080), (469, 2175880), (490, 2082628), (532, 1918210), (536, 1903895), (665, 1534568), (670, 1523116), (760, 1342747), (818, 1247540), (931, 1096120), (938, 1087940), (980, 1041314), (1064, 959105), (1273, 801640), (1330, 767284), (1340, 761558), (1636, 623770), (1862, 548060), (1876, 543970), (1960, 520657), (2045, 499016), (2345, 435176), (2546, 400820), (2660, 383642), (2680, 380779), (2863, 356440), (3272, 311885), (3283, 310840), (3724, 274030), (3752, 271985), (4090, 249508), (4655, 219224), (4690, 217588), (5092, 200410), (5320, 191821), (5726, 178220), (6365, 160328), (6566, 155420), (7448, 137015), (7771, 131320), (8180, 124754), (8911, 114520), (9310, 109612), (9380, 108794), (10184, 100205), (11452, 89110), (12730, 80164), (13132, 77710), (14315, 71288), (15542, 65660), (16360, 62377), (16415, 62168), (17822, 57260), (18620, 54806), (18760, 54397), (20041, 50920), (22904, 44555), (25460, 40082), (26264, 38855), (27403, 37240), (28630, 35644), (31084, 32830)]