20622800

素因数分解:

$2^4\times 5^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1$

素因数の和:181

約数の個数: 120

約数和(自身を含む): 55814880

約数和(自身を除く): 35192080

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 40, 43, 44, 50, 55, 80, 86, 88, 100, 109, 110, 172, 176, 200, 215, 218, 220, 275, 344, 400, 430, 436, 440, 473, 545, 550, 688, 860, 872, 880, 946, 1075, 1090, 1100, 1199, 1720, 1744, 1892, 2150, 2180, 2200, 2365, 2398, 2725, 3440, 3784, 4300, 4360, 4400, 4687, 4730, 4796, 5450, 5995, 7568, 8600, 8720, 9374, 9460, 9592, 10900, 11825, 11990, 17200, 18748, 18920, 19184, 21800, 23435, 23650, 23980, 29975, 37496, 37840, 43600, 46870, 47300, 47960, 51557, 59950, 74992, 93740, 94600, 95920, 103114, 117175, 119900, 187480, 189200, 206228, 234350, 239800, 257785, 374960, 412456, 468700, 479600, 515570, 824912, 937400, 1031140, 1288925, 1874800, 2062280, 2577850, 4124560, 5155700, 10311400, 20622800]

約数ペア:

[(1, 20622800), (2, 10311400), (4, 5155700), (5, 4124560), (8, 2577850), (10, 2062280), (11, 1874800), (16, 1288925), (20, 1031140), (22, 937400), (25, 824912), (40, 515570), (43, 479600), (44, 468700), (50, 412456), (55, 374960), (80, 257785), (86, 239800), (88, 234350), (100, 206228), (109, 189200), (110, 187480), (172, 119900), (176, 117175), (200, 103114), (215, 95920), (218, 94600), (220, 93740), (275, 74992), (344, 59950), (400, 51557), (430, 47960), (436, 47300), (440, 46870), (473, 43600), (545, 37840), (550, 37496), (688, 29975), (860, 23980), (872, 23650), (880, 23435), (946, 21800), (1075, 19184), (1090, 18920), (1100, 18748), (1199, 17200), (1720, 11990), (1744, 11825), (1892, 10900), (2150, 9592), (2180, 9460), (2200, 9374), (2365, 8720), (2398, 8600), (2725, 7568), (3440, 5995), (3784, 5450), (4300, 4796), (4360, 4730), (4400, 4687)]