20687200

素因数分解:

$2^5\times 5^2\times {\mathrm{19}}^1\times {\mathrm{1361}}^1$

素因数の和:1400

約数の個数: 72

約数和(自身を含む): 53199720

約数和(自身を除く): 32512520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 32, 38, 40, 50, 76, 80, 95, 100, 152, 160, 190, 200, 304, 380, 400, 475, 608, 760, 800, 950, 1361, 1520, 1900, 2722, 3040, 3800, 5444, 6805, 7600, 10888, 13610, 15200, 21776, 25859, 27220, 34025, 43552, 51718, 54440, 68050, 103436, 108880, 129295, 136100, 206872, 217760, 258590, 272200, 413744, 517180, 544400, 646475, 827488, 1034360, 1088800, 1292950, 2068720, 2585900, 4137440, 5171800, 10343600, 20687200]

約数ペア:

[(1, 20687200), (2, 10343600), (4, 5171800), (5, 4137440), (8, 2585900), (10, 2068720), (16, 1292950), (19, 1088800), (20, 1034360), (25, 827488), (32, 646475), (38, 544400), (40, 517180), (50, 413744), (76, 272200), (80, 258590), (95, 217760), (100, 206872), (152, 136100), (160, 129295), (190, 108880), (200, 103436), (304, 68050), (380, 54440), (400, 51718), (475, 43552), (608, 34025), (760, 27220), (800, 25859), (950, 21776), (1361, 15200), (1520, 13610), (1900, 10888), (2722, 7600), (3040, 6805), (3800, 5444)]