19715640

素因数分解:

$2^3\times 3^1\times 5^1\times 7^3\times {\mathrm{479}}^1$

素因数の和:514

約数の個数: 128

約数和(自身を含む): 69120000

約数和(自身を除く): 49404360

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 49, 56, 60, 70, 84, 98, 105, 120, 140, 147, 168, 196, 210, 245, 280, 294, 343, 392, 420, 479, 490, 588, 686, 735, 840, 958, 980, 1029, 1176, 1372, 1437, 1470, 1715, 1916, 1960, 2058, 2395, 2744, 2874, 2940, 3353, 3430, 3832, 4116, 4790, 5145, 5748, 5880, 6706, 6860, 7185, 8232, 9580, 10059, 10290, 11496, 13412, 13720, 14370, 16765, 19160, 20118, 20580, 23471, 26824, 28740, 33530, 40236, 41160, 46942, 50295, 57480, 67060, 70413, 80472, 93884, 100590, 117355, 134120, 140826, 164297, 187768, 201180, 234710, 281652, 328594, 352065, 402360, 469420, 492891, 563304, 657188, 704130, 821485, 938840, 985782, 1314376, 1408260, 1642970, 1971564, 2464455, 2816520, 3285940, 3943128, 4928910, 6571880, 9857820, 19715640]

約数ペア:

[(1, 19715640), (2, 9857820), (3, 6571880), (4, 4928910), (5, 3943128), (6, 3285940), (7, 2816520), (8, 2464455), (10, 1971564), (12, 1642970), (14, 1408260), (15, 1314376), (20, 985782), (21, 938840), (24, 821485), (28, 704130), (30, 657188), (35, 563304), (40, 492891), (42, 469420), (49, 402360), (56, 352065), (60, 328594), (70, 281652), (84, 234710), (98, 201180), (105, 187768), (120, 164297), (140, 140826), (147, 134120), (168, 117355), (196, 100590), (210, 93884), (245, 80472), (280, 70413), (294, 67060), (343, 57480), (392, 50295), (420, 46942), (479, 41160), (490, 40236), (588, 33530), (686, 28740), (735, 26824), (840, 23471), (958, 20580), (980, 20118), (1029, 19160), (1176, 16765), (1372, 14370), (1437, 13720), (1470, 13412), (1715, 11496), (1916, 10290), (1960, 10059), (2058, 9580), (2395, 8232), (2744, 7185), (2874, 6860), (2940, 6706), (3353, 5880), (3430, 5748), (3832, 5145), (4116, 4790)]