20731998980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{83617}}^1$

素因数の和:83674

約数の個数: 144

約数和(自身を含む): 57652269696

約数和(自身を除く): 36920270716

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 23, 28, 35, 44, 46, 49, 55, 70, 77, 92, 98, 110, 115, 140, 154, 161, 196, 220, 230, 245, 253, 308, 322, 385, 460, 490, 506, 539, 644, 770, 805, 980, 1012, 1078, 1127, 1265, 1540, 1610, 1771, 2156, 2254, 2530, 2695, 3220, 3542, 4508, 5060, 5390, 5635, 7084, 8855, 10780, 11270, 12397, 17710, 22540, 24794, 35420, 49588, 61985, 83617, 123970, 167234, 247940, 334468, 418085, 585319, 836170, 919787, 1170638, 1672340, 1839574, 1923191, 2341276, 2926595, 3679148, 3846382, 4097233, 4598935, 5853190, 6438509, 7692764, 8194466, 9197870, 9615955, 11706380, 12877018, 13462337, 16388932, 18395740, 19231910, 20486165, 21155101, 25754036, 26924674, 32192545, 38463820, 40972330, 42310202, 45069563, 53849348, 64385090, 67311685, 81944660, 84620404, 90139126, 94236359, 105775505, 128770180, 134623370, 148085707, 180278252, 188472718, 211551010, 225347815, 269246740, 296171414, 376945436, 423102020, 450695630, 471181795, 592342828, 740428535, 901391260, 942363590, 1036599949, 1480857070, 1884727180, 2073199898, 2961714140, 4146399796, 5182999745, 10365999490, 20731998980]

約数ペア:

[(1, 20731998980), (2, 10365999490), (4, 5182999745), (5, 4146399796), (7, 2961714140), (10, 2073199898), (11, 1884727180), (14, 1480857070), (20, 1036599949), (22, 942363590), (23, 901391260), (28, 740428535), (35, 592342828), (44, 471181795), (46, 450695630), (49, 423102020), (55, 376945436), (70, 296171414), (77, 269246740), (92, 225347815), (98, 211551010), (110, 188472718), (115, 180278252), (140, 148085707), (154, 134623370), (161, 128770180), (196, 105775505), (220, 94236359), (230, 90139126), (245, 84620404), (253, 81944660), (308, 67311685), (322, 64385090), (385, 53849348), (460, 45069563), (490, 42310202), (506, 40972330), (539, 38463820), (644, 32192545), (770, 26924674), (805, 25754036), (980, 21155101), (1012, 20486165), (1078, 19231910), (1127, 18395740), (1265, 16388932), (1540, 13462337), (1610, 12877018), (1771, 11706380), (2156, 9615955), (2254, 9197870), (2530, 8194466), (2695, 7692764), (3220, 6438509), (3542, 5853190), (4508, 4598935), (5060, 4097233), (5390, 3846382), (5635, 3679148), (7084, 2926595), (8855, 2341276), (10780, 1923191), (11270, 1839574), (12397, 1672340), (17710, 1170638), (22540, 919787), (24794, 836170), (35420, 585319), (49588, 418085), (61985, 334468), (83617, 247940), (123970, 167234)]