20578376

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1229}}^1$

素因数の和:1278

約数の個数: 64

約数和(自身を含む): 49593600

約数和(自身を除く): 29015224

約数列:

[1, 2, 4, 7, 8, 13, 14, 23, 26, 28, 46, 52, 56, 91, 92, 104, 161, 182, 184, 299, 322, 364, 598, 644, 728, 1196, 1229, 1288, 2093, 2392, 2458, 4186, 4916, 8372, 8603, 9832, 15977, 16744, 17206, 28267, 31954, 34412, 56534, 63908, 68824, 111839, 113068, 127816, 197869, 223678, 226136, 367471, 395738, 447356, 734942, 791476, 894712, 1469884, 1582952, 2572297, 2939768, 5144594, 10289188, 20578376]

約数ペア:

[(1, 20578376), (2, 10289188), (4, 5144594), (7, 2939768), (8, 2572297), (13, 1582952), (14, 1469884), (23, 894712), (26, 791476), (28, 734942), (46, 447356), (52, 395738), (56, 367471), (91, 226136), (92, 223678), (104, 197869), (161, 127816), (182, 113068), (184, 111839), (299, 68824), (322, 63908), (364, 56534), (598, 34412), (644, 31954), (728, 28267), (1196, 17206), (1229, 16744), (1288, 15977), (2093, 9832), (2392, 8603), (2458, 8372), (4186, 4916)]