81054820

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{103}}^1$

素因数の和:210

約数の個数: 144

約数和(自身を含む): 221090688

約数和(自身を除く): 140035868

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 49, 55, 70, 73, 77, 98, 103, 110, 140, 146, 154, 196, 206, 220, 245, 292, 308, 365, 385, 412, 490, 511, 515, 539, 721, 730, 770, 803, 980, 1022, 1030, 1078, 1133, 1442, 1460, 1540, 1606, 2044, 2060, 2156, 2266, 2555, 2695, 2884, 3212, 3577, 3605, 4015, 4532, 5047, 5110, 5390, 5621, 5665, 7154, 7210, 7519, 7931, 8030, 10094, 10220, 10780, 11242, 11330, 14308, 14420, 15038, 15862, 16060, 17885, 20188, 22484, 22660, 25235, 28105, 30076, 31724, 35770, 37595, 39347, 39655, 50470, 52633, 55517, 56210, 71540, 75190, 78694, 79310, 82709, 100940, 105266, 111034, 112420, 150380, 157388, 158620, 165418, 196735, 210532, 222068, 263165, 277585, 330836, 368431, 393470, 413545, 526330, 555170, 578963, 736862, 786940, 827090, 1052660, 1110340, 1157926, 1473724, 1654180, 1842155, 2315852, 2894815, 3684310, 4052741, 5789630, 7368620, 8105482, 11579260, 16210964, 20263705, 40527410, 81054820]

約数ペア:

[(1, 81054820), (2, 40527410), (4, 20263705), (5, 16210964), (7, 11579260), (10, 8105482), (11, 7368620), (14, 5789630), (20, 4052741), (22, 3684310), (28, 2894815), (35, 2315852), (44, 1842155), (49, 1654180), (55, 1473724), (70, 1157926), (73, 1110340), (77, 1052660), (98, 827090), (103, 786940), (110, 736862), (140, 578963), (146, 555170), (154, 526330), (196, 413545), (206, 393470), (220, 368431), (245, 330836), (292, 277585), (308, 263165), (365, 222068), (385, 210532), (412, 196735), (490, 165418), (511, 158620), (515, 157388), (539, 150380), (721, 112420), (730, 111034), (770, 105266), (803, 100940), (980, 82709), (1022, 79310), (1030, 78694), (1078, 75190), (1133, 71540), (1442, 56210), (1460, 55517), (1540, 52633), (1606, 50470), (2044, 39655), (2060, 39347), (2156, 37595), (2266, 35770), (2555, 31724), (2695, 30076), (2884, 28105), (3212, 25235), (3577, 22660), (3605, 22484), (4015, 20188), (4532, 17885), (5047, 16060), (5110, 15862), (5390, 15038), (5621, 14420), (5665, 14308), (7154, 11330), (7210, 11242), (7519, 10780), (7931, 10220), (8030, 10094)]