20902700

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{2297}}^1$

素因数の和:2331

約数の個数: 72

約数和(自身を含む): 55850592

約数和(自身を除く): 34947892

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 25, 26, 28, 35, 50, 52, 65, 70, 91, 100, 130, 140, 175, 182, 260, 325, 350, 364, 455, 650, 700, 910, 1300, 1820, 2275, 2297, 4550, 4594, 9100, 9188, 11485, 16079, 22970, 29861, 32158, 45940, 57425, 59722, 64316, 80395, 114850, 119444, 149305, 160790, 209027, 229700, 298610, 321580, 401975, 418054, 597220, 746525, 803950, 836108, 1045135, 1493050, 1607900, 2090270, 2986100, 4180540, 5225675, 10451350, 20902700]

約数ペア:

[(1, 20902700), (2, 10451350), (4, 5225675), (5, 4180540), (7, 2986100), (10, 2090270), (13, 1607900), (14, 1493050), (20, 1045135), (25, 836108), (26, 803950), (28, 746525), (35, 597220), (50, 418054), (52, 401975), (65, 321580), (70, 298610), (91, 229700), (100, 209027), (130, 160790), (140, 149305), (175, 119444), (182, 114850), (260, 80395), (325, 64316), (350, 59722), (364, 57425), (455, 45940), (650, 32158), (700, 29861), (910, 22970), (1300, 16079), (1820, 11485), (2275, 9188), (2297, 9100), (4550, 4594)]