81128740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{379}}^1$

素因数の和:545

約数の個数: 96

約数和(自身を含む): 214502400

約数和(自身を除く): 133373660

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 139, 140, 154, 220, 278, 308, 379, 385, 556, 695, 758, 770, 973, 1390, 1516, 1529, 1540, 1895, 1946, 2653, 2780, 3058, 3790, 3892, 4169, 4865, 5306, 6116, 7580, 7645, 8338, 9730, 10612, 10703, 13265, 15290, 16676, 19460, 20845, 21406, 26530, 29183, 30580, 41690, 42812, 52681, 53060, 53515, 58366, 83380, 105362, 107030, 116732, 145915, 210724, 214060, 263405, 291830, 368767, 526810, 579491, 583660, 737534, 1053620, 1158982, 1475068, 1843835, 2317964, 2897455, 3687670, 4056437, 5794910, 7375340, 8112874, 11589820, 16225748, 20282185, 40564370, 81128740]

約数ペア:

[(1, 81128740), (2, 40564370), (4, 20282185), (5, 16225748), (7, 11589820), (10, 8112874), (11, 7375340), (14, 5794910), (20, 4056437), (22, 3687670), (28, 2897455), (35, 2317964), (44, 1843835), (55, 1475068), (70, 1158982), (77, 1053620), (110, 737534), (139, 583660), (140, 579491), (154, 526810), (220, 368767), (278, 291830), (308, 263405), (379, 214060), (385, 210724), (556, 145915), (695, 116732), (758, 107030), (770, 105362), (973, 83380), (1390, 58366), (1516, 53515), (1529, 53060), (1540, 52681), (1895, 42812), (1946, 41690), (2653, 30580), (2780, 29183), (3058, 26530), (3790, 21406), (3892, 20845), (4169, 19460), (4865, 16676), (5306, 15290), (6116, 13265), (7580, 10703), (7645, 10612), (8338, 9730)]