21800240

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{3539}}^1$

素因数の和:3570

約数の個数: 80

約数和(自身を含む): 63210240

約数和(自身を除く): 41410000

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 80, 88, 110, 112, 140, 154, 176, 220, 280, 308, 385, 440, 560, 616, 770, 880, 1232, 1540, 3080, 3539, 6160, 7078, 14156, 17695, 24773, 28312, 35390, 38929, 49546, 56624, 70780, 77858, 99092, 123865, 141560, 155716, 194645, 198184, 247730, 272503, 283120, 311432, 389290, 396368, 495460, 545006, 622864, 778580, 990920, 1090012, 1362515, 1557160, 1981840, 2180024, 2725030, 3114320, 4360048, 5450060, 10900120, 21800240]

約数ペア:

[(1, 21800240), (2, 10900120), (4, 5450060), (5, 4360048), (7, 3114320), (8, 2725030), (10, 2180024), (11, 1981840), (14, 1557160), (16, 1362515), (20, 1090012), (22, 990920), (28, 778580), (35, 622864), (40, 545006), (44, 495460), (55, 396368), (56, 389290), (70, 311432), (77, 283120), (80, 272503), (88, 247730), (110, 198184), (112, 194645), (140, 155716), (154, 141560), (176, 123865), (220, 99092), (280, 77858), (308, 70780), (385, 56624), (440, 49546), (560, 38929), (616, 35390), (770, 28312), (880, 24773), (1232, 17695), (1540, 14156), (3080, 7078), (3539, 6160)]