20195595

素因数分解:

$3^3\times 5^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{71}}^1$

素因数の和:142

約数の個数: 96

約数和(自身を含む): 43338240

約数和(自身を除く): 23142645

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 43, 45, 49, 63, 71, 105, 129, 135, 147, 189, 213, 215, 245, 301, 315, 355, 387, 441, 497, 639, 645, 735, 903, 945, 1065, 1161, 1323, 1491, 1505, 1917, 1935, 2107, 2205, 2485, 2709, 3053, 3195, 3479, 4473, 4515, 5805, 6321, 6615, 7455, 8127, 9159, 9585, 10437, 10535, 13419, 13545, 15265, 17395, 18963, 21371, 22365, 27477, 31311, 31605, 40635, 45795, 52185, 56889, 64113, 67095, 82431, 93933, 94815, 106855, 137385, 149597, 156555, 192339, 284445, 320565, 412155, 448791, 469665, 577017, 747985, 961695, 1346373, 2243955, 2885085, 4039119, 6731865, 20195595]

約数ペア:

[(1, 20195595), (3, 6731865), (5, 4039119), (7, 2885085), (9, 2243955), (15, 1346373), (21, 961695), (27, 747985), (35, 577017), (43, 469665), (45, 448791), (49, 412155), (63, 320565), (71, 284445), (105, 192339), (129, 156555), (135, 149597), (147, 137385), (189, 106855), (213, 94815), (215, 93933), (245, 82431), (301, 67095), (315, 64113), (355, 56889), (387, 52185), (441, 45795), (497, 40635), (639, 31605), (645, 31311), (735, 27477), (903, 22365), (945, 21371), (1065, 18963), (1161, 17395), (1323, 15265), (1491, 13545), (1505, 13419), (1917, 10535), (1935, 10437), (2107, 9585), (2205, 9159), (2485, 8127), (2709, 7455), (3053, 6615), (3195, 6321), (3479, 5805), (4473, 4515)]