20386240

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{479}}^1$

素因数の和:522

約数の個数: 112

約数和(自身を含む): 58521600

約数和(自身を除く): 38135360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 32, 35, 38, 40, 56, 64, 70, 76, 80, 95, 112, 133, 140, 152, 160, 190, 224, 266, 280, 304, 320, 380, 448, 479, 532, 560, 608, 665, 760, 958, 1064, 1120, 1216, 1330, 1520, 1916, 2128, 2240, 2395, 2660, 3040, 3353, 3832, 4256, 4790, 5320, 6080, 6706, 7664, 8512, 9101, 9580, 10640, 13412, 15328, 16765, 18202, 19160, 21280, 26824, 30656, 33530, 36404, 38320, 42560, 45505, 53648, 63707, 67060, 72808, 76640, 91010, 107296, 127414, 134120, 145616, 153280, 182020, 214592, 254828, 268240, 291232, 318535, 364040, 509656, 536480, 582464, 637070, 728080, 1019312, 1072960, 1274140, 1456160, 2038624, 2548280, 2912320, 4077248, 5096560, 10193120, 20386240]

約数ペア:

[(1, 20386240), (2, 10193120), (4, 5096560), (5, 4077248), (7, 2912320), (8, 2548280), (10, 2038624), (14, 1456160), (16, 1274140), (19, 1072960), (20, 1019312), (28, 728080), (32, 637070), (35, 582464), (38, 536480), (40, 509656), (56, 364040), (64, 318535), (70, 291232), (76, 268240), (80, 254828), (95, 214592), (112, 182020), (133, 153280), (140, 145616), (152, 134120), (160, 127414), (190, 107296), (224, 91010), (266, 76640), (280, 72808), (304, 67060), (320, 63707), (380, 53648), (448, 45505), (479, 42560), (532, 38320), (560, 36404), (608, 33530), (665, 30656), (760, 26824), (958, 21280), (1064, 19160), (1120, 18202), (1216, 16765), (1330, 15328), (1520, 13412), (1916, 10640), (2128, 9580), (2240, 9101), (2395, 8512), (2660, 7664), (3040, 6706), (3353, 6080), (3832, 5320), (4256, 4790)]