19804400

素因数分解:

$2^4\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{643}}^1$

素因数の和:679

約数の個数: 120

約数和(自身を含む): 59412864

約数和(自身を除く): 39608464

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 25, 28, 35, 40, 44, 50, 55, 56, 70, 77, 80, 88, 100, 110, 112, 140, 154, 175, 176, 200, 220, 275, 280, 308, 350, 385, 400, 440, 550, 560, 616, 643, 700, 770, 880, 1100, 1232, 1286, 1400, 1540, 1925, 2200, 2572, 2800, 3080, 3215, 3850, 4400, 4501, 5144, 6160, 6430, 7073, 7700, 9002, 10288, 12860, 14146, 15400, 16075, 18004, 22505, 25720, 28292, 30800, 32150, 35365, 36008, 45010, 49511, 51440, 56584, 64300, 70730, 72016, 90020, 99022, 112525, 113168, 128600, 141460, 176825, 180040, 198044, 225050, 247555, 257200, 282920, 353650, 360080, 396088, 450100, 495110, 565840, 707300, 792176, 900200, 990220, 1237775, 1414600, 1800400, 1980440, 2475550, 2829200, 3960880, 4951100, 9902200, 19804400]

約数ペア:

[(1, 19804400), (2, 9902200), (4, 4951100), (5, 3960880), (7, 2829200), (8, 2475550), (10, 1980440), (11, 1800400), (14, 1414600), (16, 1237775), (20, 990220), (22, 900200), (25, 792176), (28, 707300), (35, 565840), (40, 495110), (44, 450100), (50, 396088), (55, 360080), (56, 353650), (70, 282920), (77, 257200), (80, 247555), (88, 225050), (100, 198044), (110, 180040), (112, 176825), (140, 141460), (154, 128600), (175, 113168), (176, 112525), (200, 99022), (220, 90020), (275, 72016), (280, 70730), (308, 64300), (350, 56584), (385, 51440), (400, 49511), (440, 45010), (550, 36008), (560, 35365), (616, 32150), (643, 30800), (700, 28292), (770, 25720), (880, 22505), (1100, 18004), (1232, 16075), (1286, 15400), (1400, 14146), (1540, 12860), (1925, 10288), (2200, 9002), (2572, 7700), (2800, 7073), (3080, 6430), (3215, 6160), (3850, 5144), (4400, 4501)]