20980538880

素因数分解:

$2^9\times 3^1\times 5^1\times 7^1\times {\mathrm{390263}}^1$

素因数の和:390296

約数の個数: 160

約数和(自身を含む): 76654093824

約数和(自身を除く): 55673554944

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 56, 60, 64, 70, 80, 84, 96, 105, 112, 120, 128, 140, 160, 168, 192, 210, 224, 240, 256, 280, 320, 336, 384, 420, 448, 480, 512, 560, 640, 672, 768, 840, 896, 960, 1120, 1280, 1344, 1536, 1680, 1792, 1920, 2240, 2560, 2688, 3360, 3584, 3840, 4480, 5376, 6720, 7680, 8960, 10752, 13440, 17920, 26880, 53760, 390263, 780526, 1170789, 1561052, 1951315, 2341578, 2731841, 3122104, 3902630, 4683156, 5463682, 5853945, 6244208, 7805260, 8195523, 9366312, 10927364, 11707890, 12488416, 13659205, 15610520, 16391046, 18732624, 21854728, 23415780, 24976832, 27318410, 31221040, 32782092, 37465248, 40977615, 43709456, 46831560, 49953664, 54636820, 62442080, 65564184, 74930496, 81955230, 87418912, 93663120, 99907328, 109273640, 124884160, 131128368, 149860992, 163910460, 174837824, 187326240, 199814656, 218547280, 249768320, 262256736, 299721984, 327820920, 349675648, 374652480, 437094560, 499536640, 524513472, 599443968, 655641840, 699351296, 749304960, 874189120, 999073280, 1049026944, 1311283680, 1398702592, 1498609920, 1748378240, 2098053888, 2622567360, 2997219840, 3496756480, 4196107776, 5245134720, 6993512960, 10490269440, 20980538880]

約数ペア:

[(1, 20980538880), (2, 10490269440), (3, 6993512960), (4, 5245134720), (5, 4196107776), (6, 3496756480), (7, 2997219840), (8, 2622567360), (10, 2098053888), (12, 1748378240), (14, 1498609920), (15, 1398702592), (16, 1311283680), (20, 1049026944), (21, 999073280), (24, 874189120), (28, 749304960), (30, 699351296), (32, 655641840), (35, 599443968), (40, 524513472), (42, 499536640), (48, 437094560), (56, 374652480), (60, 349675648), (64, 327820920), (70, 299721984), (80, 262256736), (84, 249768320), (96, 218547280), (105, 199814656), (112, 187326240), (120, 174837824), (128, 163910460), (140, 149860992), (160, 131128368), (168, 124884160), (192, 109273640), (210, 99907328), (224, 93663120), (240, 87418912), (256, 81955230), (280, 74930496), (320, 65564184), (336, 62442080), (384, 54636820), (420, 49953664), (448, 46831560), (480, 43709456), (512, 40977615), (560, 37465248), (640, 32782092), (672, 31221040), (768, 27318410), (840, 24976832), (896, 23415780), (960, 21854728), (1120, 18732624), (1280, 16391046), (1344, 15610520), (1536, 13659205), (1680, 12488416), (1792, 11707890), (1920, 10927364), (2240, 9366312), (2560, 8195523), (2688, 7805260), (3360, 6244208), (3584, 5853945), (3840, 5463682), (4480, 4683156), (5376, 3902630), (6720, 3122104), (7680, 2731841), (8960, 2341578), (10752, 1951315), (13440, 1561052), (17920, 1170789), (26880, 780526), (53760, 390263)]