20161392080

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1291}}^1\times {\mathrm{11483}}^1$

素因数の和:12804

約数の個数: 80

約数和(自身を含む): 49675374144

約数和(自身を除く): 29513982064

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1291, 1360, 2582, 5164, 6455, 10328, 11483, 12910, 20656, 21947, 22966, 25820, 43894, 45932, 51640, 57415, 87788, 91864, 103280, 109735, 114830, 175576, 183728, 195211, 219470, 229660, 351152, 390422, 438940, 459320, 780844, 877880, 918640, 976055, 1561688, 1755760, 1952110, 3123376, 3904220, 7808440, 14824553, 15616880, 29649106, 59298212, 74122765, 118596424, 148245530, 237192848, 252017401, 296491060, 504034802, 592982120, 1008069604, 1185964240, 1260087005, 2016139208, 2520174010, 4032278416, 5040348020, 10080696040, 20161392080]

約数ペア:

[(1, 20161392080), (2, 10080696040), (4, 5040348020), (5, 4032278416), (8, 2520174010), (10, 2016139208), (16, 1260087005), (17, 1185964240), (20, 1008069604), (34, 592982120), (40, 504034802), (68, 296491060), (80, 252017401), (85, 237192848), (136, 148245530), (170, 118596424), (272, 74122765), (340, 59298212), (680, 29649106), (1291, 15616880), (1360, 14824553), (2582, 7808440), (5164, 3904220), (6455, 3123376), (10328, 1952110), (11483, 1755760), (12910, 1561688), (20656, 976055), (21947, 918640), (22966, 877880), (25820, 780844), (43894, 459320), (45932, 438940), (51640, 390422), (57415, 351152), (87788, 229660), (91864, 219470), (103280, 195211), (109735, 183728), (114830, 175576)]