20902717920

素因数分解:

$2^5\times 3^1\times 5^1\times 7^2\times {\mathrm{888721}}^1$

素因数の和:888753

約数の個数: 144

約数和(自身を含む): 76593616848

約数和(自身を除く): 55690898928

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, 49, 56, 60, 70, 80, 84, 96, 98, 105, 112, 120, 140, 147, 160, 168, 196, 210, 224, 240, 245, 280, 294, 336, 392, 420, 480, 490, 560, 588, 672, 735, 784, 840, 980, 1120, 1176, 1470, 1568, 1680, 1960, 2352, 2940, 3360, 3920, 4704, 5880, 7840, 11760, 23520, 888721, 1777442, 2666163, 3554884, 4443605, 5332326, 6221047, 7109768, 8887210, 10664652, 12442094, 13330815, 14219536, 17774420, 18663141, 21329304, 24884188, 26661630, 28439072, 31105235, 35548840, 37326282, 42658608, 43547329, 49768376, 53323260, 62210470, 71097680, 74652564, 85317216, 87094658, 93315705, 99536752, 106646520, 124420940, 130641987, 142195360, 149305128, 174189316, 186631410, 199073504, 213293040, 217736645, 248841880, 261283974, 298610256, 348378632, 373262820, 426586080, 435473290, 497683760, 522567948, 597220512, 653209935, 696757264, 746525640, 870946580, 995367520, 1045135896, 1306419870, 1393514528, 1493051280, 1741893160, 2090271792, 2612839740, 2986102560, 3483786320, 4180543584, 5225679480, 6967572640, 10451358960, 20902717920]

約数ペア:

[(1, 20902717920), (2, 10451358960), (3, 6967572640), (4, 5225679480), (5, 4180543584), (6, 3483786320), (7, 2986102560), (8, 2612839740), (10, 2090271792), (12, 1741893160), (14, 1493051280), (15, 1393514528), (16, 1306419870), (20, 1045135896), (21, 995367520), (24, 870946580), (28, 746525640), (30, 696757264), (32, 653209935), (35, 597220512), (40, 522567948), (42, 497683760), (48, 435473290), (49, 426586080), (56, 373262820), (60, 348378632), (70, 298610256), (80, 261283974), (84, 248841880), (96, 217736645), (98, 213293040), (105, 199073504), (112, 186631410), (120, 174189316), (140, 149305128), (147, 142195360), (160, 130641987), (168, 124420940), (196, 106646520), (210, 99536752), (224, 93315705), (240, 87094658), (245, 85317216), (280, 74652564), (294, 71097680), (336, 62210470), (392, 53323260), (420, 49768376), (480, 43547329), (490, 42658608), (560, 37326282), (588, 35548840), (672, 31105235), (735, 28439072), (784, 26661630), (840, 24884188), (980, 21329304), (1120, 18663141), (1176, 17774420), (1470, 14219536), (1568, 13330815), (1680, 12442094), (1960, 10664652), (2352, 8887210), (2940, 7109768), (3360, 6221047), (3920, 5332326), (4704, 4443605), (5880, 3554884), (7840, 2666163), (11760, 1777442), (23520, 888721)]