21114320

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{479}}^1$

素因数の和:540

約数の個数: 80

約数和(自身を含む): 53568000

約数和(自身を除く): 32453680

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 29, 38, 40, 58, 76, 80, 95, 116, 145, 152, 190, 232, 290, 304, 380, 464, 479, 551, 580, 760, 958, 1102, 1160, 1520, 1916, 2204, 2320, 2395, 2755, 3832, 4408, 4790, 5510, 7664, 8816, 9101, 9580, 11020, 13891, 18202, 19160, 22040, 27782, 36404, 38320, 44080, 45505, 55564, 69455, 72808, 91010, 111128, 138910, 145616, 182020, 222256, 263929, 277820, 364040, 527858, 555640, 728080, 1055716, 1111280, 1319645, 2111432, 2639290, 4222864, 5278580, 10557160, 21114320]

約数ペア:

[(1, 21114320), (2, 10557160), (4, 5278580), (5, 4222864), (8, 2639290), (10, 2111432), (16, 1319645), (19, 1111280), (20, 1055716), (29, 728080), (38, 555640), (40, 527858), (58, 364040), (76, 277820), (80, 263929), (95, 222256), (116, 182020), (145, 145616), (152, 138910), (190, 111128), (232, 91010), (290, 72808), (304, 69455), (380, 55564), (464, 45505), (479, 44080), (551, 38320), (580, 36404), (760, 27782), (958, 22040), (1102, 19160), (1160, 18202), (1520, 13891), (1916, 11020), (2204, 9580), (2320, 9101), (2395, 8816), (2755, 7664), (3832, 5510), (4408, 4790)]